Execution Copy
                                CREDIT AGREEMENT

                             dated as of May 1, 1996


                            COMSTOCK RESOURCES, INC.,

                            COMSTOCK OIL & GAS, INC.,

                      COMSTOCK OIL & GAS - LOUISIANA, INC.

                         COMSTOCK OFFSHORE ENERGY, INC.,

                             THE BANKS PARTY HERETO

                         BANK ONE, TEXAS, N.A., CO-AGENT

                                       AND

                  THE FIRST NATIONAL BANK OF CHICAGO, AS AGENT







                                TABLE OF CONTENTS

Section 1.    Definitions......................................................2
              1.1  Certain Definitions.........................................2
              1.2  Other Definitions; Rules Of Construction...................14

SECTION 2.    The Commitments.................................................14
              2.1  Advances...................................................14

SECTION 3.    The Advances....................................................16
              3.1  Disbursement of Advances...................................16
              3.2  Conditions of Advances.....................................18
              3.3  Letter of Credit Reimbursement Payments....................20
              3.4. Withholding Tax Exemption..................................23

SECTION 4.    Payment and Prepayment; Fees; Change in
              Circumstances...................................................24
              4.1  Principal Payments.........................................24
              4.2  Interest Payment...........................................25
              4.3  Fees.......................................................25
              4.4  Payment Method.............................................26
              4.5  No Setoff or Deduction.....................................26
              4.6  Payment on Non-Business Day; Payment
                   Computations...............................................27
              4.7. Yield Protection...........................................27
              4.8. Changes in Capital Adequacy Regulations....................27
              4.9. Availability of Types of Advances..........................28
              4.10.Funding Indemnification....................................28
              4.11.Bank Statements; Survival of Indemnity.....................28

SECTION 5.    Security........................................................29
              5.1  Security Documents.........................................29
              5.2  Guaranty...................................................30
              5.3  Additional Security Documents..............................30

SECTION 6.    Representations and Warranties..................................30
              6.1  Corporate Existence and Power..............................30
              6.2  Corporate Authority........................................31
              6.3  Binding Effect.............................................31
              6.4  Subsidiaries...............................................31
              6.5  Liens......................................................31
              6.6  Litigation.................................................31
              6.7  Financial Condition........................................31
              6.8  Use of Advance.............................................32
              6.9  Security Documents.........................................32
              6.10 Consents, Etc..............................................32







SECTION                                                                     PAGE

              6.11 Taxes..................................................... 32
              6.12 Title to Properties....................................... 32
              6.13 ERISA..................................................... 33
              6.14 Environmental and Safety Matters.......................... 33
              6.15 Direct Benefit............................................ 34
              6.16 Solvency.................................................. 34
              6.17 Disclosure................................................ 34

SECTION 7.    Covenants.......................................................34
              7.1  Affirmative Covenants......................................34
                   (a) Preservation of Corporate Existence,
              7.2  Negative Covenants.........................................38
                   (a) Current Ratio..........................................38
                   (b) Tangible Net
                       Worth..................................................38
                   (c) Interest Coverage Ratio................................39
                   (d) Indebtedness...........................................39
                   (e) Liens..................................................39
                   (f) Merger; Acquisitions; Etc..............................40
                   (g) Disposition of Assets; Etc.............................41
                   (h) Nature of Business.....................................41
                   (i) Investments, Advance and Advances,
                       Contingent Liabilities.................................41
                   (j) Dividends..............................................42
                   (k) Transactions with Affiliates...........................42
                   (l) Subordinated Debt......................................42
                   (m) Payments and Modification
                       of Debt................................................42
                   (n) Additional Covenants...................................43

SECTION 8.    Default.........................................................43
              8.1  Events of Default..........................................43
              8.2  Remedies...................................................45


CREDIT AGREEMENT                                                         Page ii






SECTION                                                                     PAGE

              8.3  Distribution of Proceeds...................................46
              8.4  Letter of Credit Liabilities...............................47

SECTION 9.    The Agent and the Banks.........................................48
              9.1  Appointment; Nature of Relationship........................48
              9.2  Powers.....................................................48
              9.3  General Immunity...........................................48
              9.4  No Responsibility for Loans, Recitals, Etc. ...............48
              9.5  Action on Instruction of Banks.............................49
              9.6  Employment of Agents and Counsel...........................49
              9.7  Reliance on Documents; Counsel.............................49
              9.8  Agent's Reimbursement and Indemnification..................49
              9.9  Notice of Default .........................................50
              9.10 Rights as a Bank...........................................50
              9.11 Bank Credit Decision.......................................50
              9.12 Successor Agent............................................50
              9.13 Pro Rata Sharing by Banks..................................51
              9.14 Determination of Borrowing Base, Etc.......................51
              9.15 Co-Agent...................................................52

SECTION 10.   Miscellaneous...................................................52
              10.1  Amendments; Etc...........................................52
              10.2  Notices...................................................52
              10.3  Conduct No Waiver; Remedies Cumulative....................53
              10.4  Reliance on and Survival of Various
                    Provisions................................................53
              10.5  Expenses; Indemnification.................................53
              10.6  Successors and Assigns....................................55
              10.7  CHOICE OF LAW.............................................58
              10.8  Table of Contents and Headings............................58
              10.9  Construction of Certain Provisions........................58
              10.10 Integration and Severability..............................59
              10.11 Interest Rate Limitation..................................59
              10.12 Counterparts..............................................9
              10.13 Independence of Covenants.................................59
              10.14 Consent to Jurisdiction...................................59
              10.15 JURY TRIAL WAIVER.........................................60
              10.16 Joint and Several Obligations; Contribution
                    Rights; Savings Clause....................................60


CREDIT AGREEMENT                                                        Page iii





              10.17 Consents to Renewals, Modifications and
                    Other Actions and Events..................................62
              10.18 Waivers, Etc..............................................63
              10.19 Confidentiality...........................................63


EXHIBIT

              A.......Bridge Note
              B.......Consent and Amendment of Security Documents
              C.......Revolving Credit Note
              D.......Term Note
              E.......Request for Loan
              F.......Assignment and Acceptance
              G.......Assumption Agreement


SCHEDULES

              6.4.....Subsidiaries
              7.2(d)..Permitted Indebtedness
              7.2(e)..Permitted Liens
              7.2(i)..CRI Guaranteed Indebtedness


CREDIT AGREEMENT                                                         Page iv





                                CREDIT AGREEMENT


     THIS AGREEMENT,  dated as of May 1, 1996, is among COMSTOCK RESOURCES, INC.
a Nevada  corporation  ("CRI"),  COMSTOCK OIL & GAS, INC., a Nevada  corporation
("COG"),  COMSTOCK OIL & GAS - LOUISIANA,  INC., a Nevada corporation  ("COGL"),
COMSTOCK OFFSHORE ENERGY,  INC., a Delaware  corporation ("COE") (CRI, COG, COGL
and COE may  hereinafter  collectively be referred to as the  "Borrowers"),  the
lenders  party  hereto  from  time  to  time  (collectively,   the  "Banks"  and
individually,  a "Bank"),  BANK ONE, TEXAS,  N.A., as co-agent for the Banks (in
such capacity,  the "co-agent") and THE FIRST NATIONAL BANK OF CHICAGO, as agent
for the Banks (in such capacity, the "Agent").


                                    RECITALS

     A. The Borrowers,  Bank One,  Texas,  N.A., NBD Bank and NBD Bank, as agent
for Bank One, Texas,  N.A. and itself executed a Credit Agreement dated July 31,
1995, as amended (the "Existing Credit Agreement"), which amended and restated a
Credit  Agreement  dated as of  September  30, 1994,  as amended,  which in turn
amended and  restated a Credit  Agreement  dated as of  November  15,  1993,  as
amended.  The First  National  Bank of Chicago is the assignee of all rights and
interests of NBD Bank under the Existing  Credit  Agreement,  both in NBD Bank's
capacity  as a bank  and as  agent  thereunder  and  under  all  agreements  and
documents executed in connection therewith.

     B. The  Borrowers  have  requested  that the Banks  amend and  restate  the
Existing  Credit  Agreement as herein  provided,  replacing and  refinancing the
indebtedness  thereunder  with a three year secured  revolving  credit  facility
providing  for  revolving  credit  loans in the  aggregate  principal  amount of
$166,000,000  converting  to a two year  term  loan,  and a  bridge  loan in the
aggregate  principal  amount of $10,000,000 in order to provide bridge financing
for the Borrowers'  acquisition of properties from Black Stone Oil Company,  and
the Banks are willing to establish such a credit  facility and loans in favor of
the Borrowers and amend and restate the Existing  Credit  Agreement on the terms
and conditions herein set forth.



                                    AGREEMENT

     In  consideration  of the  premises  and of the  mutual  agreements  herein
contained,  the parties hereto agree that the Existing Credit Agreement shall be
amended and restated as follows:







     SECTION 1. Definitions

     1.1 Certain Definitions. As used herein, the following terms shall have the
following respective meanings:

     "Advances" shall mean the Loans and the Letter of Credit Advances.

     "Advance  Date"  shall  mean  each  date for the  making,  continuation  or
conversion of an Advance as specified in the notice  delivered by the Borrowers,
or any of them, permitted by this Agreement.

     "Affiliate",  when used with  respect  to any  person  shall mean any other
person which,  directly or indirectly,  controls or is controlled by or is under
common control with such person or any other person which is owned 5% or more by
such person or any Subsidiary or other Affiliate of such person. For purposes of
this  definition  "control"  (including  the  correlative  meanings of the terms
"controlled  by" and "under common control  with"),  with respect to any person,
shall mean possession,  directly or indirectly,  of the power to direct or cause
the direction of the management and policies of such person, whether through the
ownership of voting securities or otherwise.

     "Applicable  Margin"  shall  mean,  with  respect to any  Eurodollar  Loan,
Floating  Rate  Loan and  Commitment  Fee,  as the case may be,  the  applicable
percentage  set forth in the table below based upon a fraction,  expressed  as a
percentage,  determined  as of the last day of each fiscal  quarter of CRI,  the
numerator of which is the daily average of the Advances  outstanding during such
fiscal  quarter  and the  denominator  of  which  is the  daily  average  of the
Borrowing Base during such fiscal quarter (the "Utilization Percentage"):

================================================================================
         Utilization          Eurodollar       Floating           Commitment   
        Percentage "UP"        Rate Loan       Rate Loan          Fee under   
                                                               Section 4.3(a)(i)
- ------------------------------------------------------------------------------
           UP>90%                2.00%           0.50%             .50%
- ------------------------------------------------------------------------------
         UP 75% to 90%           1.75%           0.50%             .375%
- ------------------------------------------------------------------------------
         UP 55% to 75%           1.50%           0.25%             .375%
- ------------------------------------------------------------------------------
         UP Less than 55%        1.25%              0%             .25%
==============================================================================

The Utilization  Percentage  shall be determined by the Agent at the end of each
fiscal  quarter and shall remain in effect for the following  fiscal  quarter of
CRI,  provided that the Agent shall also  determine the  Utilization  Percentage
promptly after the initial issuance of any Subordinated Debt


CREDIT AGREEMENT                                                         Page 2





and adjust the  Applicable  Margin upon such  determination,  and the Applicable
Margin in effect on the first day of any Interest  Period of any Eurodollar Loan
shall remain in effect for the entire Interest Period. Notwithstanding the above
or anything else in this  Agreement,  (a) upon and during the continuance of any
Event of Default,  the Applicable  Margin shall be based on the highest possible
Applicable  Margin  described in the table above,  regardless of the Utilization
Percentage and (b) at any time any amount is outstanding  under the Bridge Loan,
the Applicable  Margin with respect to Floating Rate Loans and  Commitment  Fees
shall be 0.50% and the  Borrowers  shall not be  entitled  to obtain  Eurodollar
Loans.

     "Bank   Obligations"   shall  mean  all   indebtedness,   obligations   and
liabilities,  whether now or hereafter arising, of the Borrowers to the Agent or
any Bank pursuant to any of the Loan Documents.

     "Black Stone" shall mean Black Stone Oil Company, a Texas corporation.

     "Borrowing  Base" shall mean an amount equal to the value of the Collateral
determined  by the Agent and the  Co-Agent (or by each of the Banks as described
in Section 9.14) in their sole discretion,  based on the Agent's, the Co-Agent's
or each Bank's, as the case may be, customary and standard  practices in lending
to oil and gas companies generally,  including without limitation their standard
engineering  criteria and oil and gas lending  criteria (and it is  acknowledged
and  agreed  that such  customary  and  standard  practices,  including  without
limitation such engineering criteria and oil and gas lending criteria,  shall be
determined  by the Agent,  the  Co-Agent  and each Bank,  as the case may be, in
their sole discretion, and such determination shall be conclusive and binding).

     "Bridge Loan" means any borrowing under Section 3.1 evidenced by the Bridge
Note and made pursuant to Section 2.1(c).

     "Bridge Note" means any  promissory  note of the Borrowers  evidencing  the
Bridge Loan, in  substantially  the form annexed hereto as Exhibit A, as amended
or modified  from time to time and together  with any  promissory  note or notes
issued in  exchange  or  replacement  therefor.  "Business  Day"  means (i) with
respect to any borrowing,  payment or rate selection of Eurodollar  Loans, a day
(other than a Saturday or Sunday) on which banks  generally  are open in Chicago
and New York for the conduct of substantially  all of their  commercial  lending
activities  and on which dealings in United States dollars are carried on in the
London  interbank  market and (ii) for all other  purposes,  a day (other than a
Saturday or Sunday) on which banks generally are open in Chicago for the conduct
of substantially all of their commercial lending activities.

     "Change in Control"  means the  acquisition  by any Person,  or two or more
Persons acting in concert,  of beneficial  ownership (within the meaning of Rule
13d-3 of the Securities


CREDIT AGREEMENT                                                         Page 3





and Exchange  Commission under the Securities Exchange Act of 1934) of more than
50% of the outstanding shares of voting stock of CRI.

     "Code" shall mean the Internal  Revenue Code of 1986,  as amended from time
to time, and the regulations thereunder.

     "CMC" shall mean Comstock Management Corporation, a Nevada corporation.

     "CNG" shall mean Comstock Natural Gas, Inc., a Nevada corporation.

     "CNG/CRI  Guaranty  Formula"  shall mean, as of any date, the sum of (a) an
amount  equal to 70% of the amount of Eligible CNG  Accounts  Receivable  (other
than  those  described  in clause  (b))  plus (b) an amount  equal to 90% of the
amount of  Eligible  CNG  Accounts  Receivable  supported  by  letters of credit
confirmed by a financial  institution  acceptable to the Agent in its reasonable
discretion;  provided,  that,  the amount of Eligible  CNG  Accounts  Receivable
described in this clause (b) included in the CNG  Borrowing  Base may not exceed
50% of the aggregate amount of Eligible CNG Accounts Receivable.

     "Collateral"  shall have the  meaning  ascribed  thereto in Section  5.1(a)
hereof.

     "Commitments" shall mean, with respect to each Bank, the commitment of each
such  Bank to make  Revolving  Credit  Advances  and the Term Loan  pursuant  to
Sections 2.1(a) and (b), in amounts not exceeding in aggregate  principal amount
outstanding at any time the respective commitment amount for each Bank set forth
next to the name of each such Bank on the signature  pages hereof or established
pursuant to Section 10.6, as the case may be, as such amount may be reduced from
time to time pursuant to Sections 2.1(a) or (b).

     "Consent and  Amendment of Security  Documents"  shall mean the consent and
amendment of security  documents  entered into by the Borrowers,  the Guarantors
and the Agent pursuant to this Agreement in substantially the form of Exhibit B,
as amended or modified from time to time.

     "Consolidated"  or  "consolidated"  shall mean, when used with reference to
any financial term in this  Agreement,  the aggregate for two or more Persons of
the  amount  signified  by  such  term  for all  such  Persons  determined  on a
consolidated basis and in accordance with GAAP.

     "Consolidated   Adjusted  Cash  Flow"  shall  mean,  for  any  period,  the
Consolidated  Net Income for such period  taken as a single  accounting  period,
plus, to the extent deducted in determining such  Consolidated  Net Income,  all
depreciation,  amortization and depletion  expense,  and other non cash charges,
provided that in determining  Consolidated Net Income as used in this definition
the  following  shall be excluded,  without  duplication:  (a) the income of any
Person accrued prior to the date such Person is merged into or consolidated with
a Borrower or such


CREDIT AGREEMENT                                                          Page 4





Person's  assets are acquired by a Borrower,  (b) the proceeds of any  insurance
policy,  (c)  gains  or  losses  from  the  sale,  exchange,  transfer  or other
disposition  of  property or assets of any  Borrower  and related tax effects in
accordance with GAAP and (d) any  extraordinary  or  non-recurring  gains of any
Borrower, and related tax effects in accordance with GAAP.

     "Consolidated  Interest Expense" shall mean, for any period, total interest
and  related  expense  (including,  without  limitation,  that  portion  of  any
capitalized lease obligation attributable to interest expense in conformity with
GAAP,  amortization  of debt discount,  all capitalized  interest,  the interest
portion of any deferred  payment  obligations,  all  commissions,  discounts and
other fees and  charges  owed with  respect to  letters  of credit  (other  than
letters of credit for CNG  utilized  for  purchasing  natural  gas in  aggregate
amount not exceeding $1,000,000) and bankers acceptance financing, the net costs
and net payments  under any interest rate hedging,  cap or similar  agreement or
arrangement,  prepayment charges,  agency fees,  administrative fees, commitment
fees and  capitalized  transaction  costs  allocated to interest  expense) paid,
payable or accrued during such period,  without duplication for any period, with
respect to all  outstanding  Indebtedness  of CRI and its  Subsidiaries,  all as
determined for CRI and its Subsidiaries on a consolidated  basis for such period
in accordance with GAAP.

     "Consolidated Net Income" shall mean, for any period, the net income of CRI
and its Subsidiaries for such period, determined in accordance with GAAP, minus,
to the extent not deducted  from such net income,  the amount of allowable  cash
dividends  paid during such period on the 1994  Preferred  Stock and on the 1995
Preferred Stock.

     "Contingent  Liabilities"  of any person  shall mean,  as of any date,  all
obligations  of such person or of others for which such  person is  contingently
liable, as obligor, guarantor, surety or in any other capacity, or in respect of
which  obligations such person assures a creditor against loss or agrees to take
any action to prevent  any such loss  (other  than  endorsements  of  negotiable
instruments   for   collection   in  the   ordinary   course  of  business   and
indemnifications  typical and customary in the ordinary  course of such person's
oil  and  gas  business  in  connection  with  operating  agreements  and  other
agreements  executed  in the  ordinary  course  of  such  person's  oil  and gas
business),  including without  limitation all reimbursement  obligations of such
person in respect of any letters of credit,  surety bonds or similar obligations
and all  obligations of such person to advance funds to, or to purchase  assets,
property or services  from,  any other person in order to maintain the financial
condition of such other person.

     "Continuing  Directors"  of any  person  shall mean the  directors  of such
person on the  Effective  Date and each other  director  of such  person if such
other  director's  nomination  for  election to the Board of  Directors  of such
person is  recommended  by a majority of the then  Continuing  Directors of such
Board of Directors.

     "CPI" shall mean Crosstex Pipeline, Inc., a Texas corporation.




CREDIT AGREEMENT                                                         Page 5






     "Current  Assets"  and  "Current  Liabilities"  shall  mean all  assets  or
liabilities of CRI and its Subsidiaries,  on a consolidated basis  respectively,
which  should be  classified  as  current  assets  and  current  liabilities  in
accordance with GAAP;  provided that the calculation of Current Assets shall not
include receivables of the Borrowers owing by any Affiliate in excess of 90 days
or subject to any dispute or offset or otherwise  unacceptable,  advances by the
Borrowers to any  Affiliate or any asset  classified  as a Current  Asset solely
because it is held for sale,  and  Current  Liabilities  shall not  include  the
current maturities of any Indebtedness or the Bridge Note.

     "Default"  shall mean any Event of Default or any event or condition  which
might become an Event of Default with notice or lapse of time or both.

     "Dollars"  and "$" shall  mean the  lawful  money of the  United  States of
America.

     "Effective  Date"  shall mean the  effective  date  specified  in the final
paragraph of this Agreement.

     "Eligible CNG Accounts  Receivable" shall mean, as of any date, those trade
accounts  receivable  owned by CNG which are payable in  Dollars,  valued at the
face  amount  thereof  less  sales,  excise or similar  taxes and less  returns,
discounts,  claims,  credits and  allowances  of any nature at any time  issued,
including  without  limitation  rebates and advertising  allowances  receivable,
owing,  granted,  outstanding,  available or claimed,  but shall not include any
such account receivable (a) that is not a bona fide existing  obligation created
by the sale and actual  delivery of  inventory,  goods or other  property or the
furnishing of services or other good and sufficient  consideration  to customers
of CNG in the ordinary  course of  business,  (b) that is more than 60 days past
due, (c) that is subject to any known dispute,  contra-account,  defense, offset
or  counterclaim  or any lien,  encumbrance  or security  interest,  (d) that is
payable by any person  located  outside the United  States  (which  shall not be
deemed to include any  territories of the United States) and is not supported by
a letter of credit  issued by banks  acceptable  to the Agent in its  reasonable
discretion,  (e) that is payable by the United States or any of its departments,
agencies  or  instrumentalities,  (f) that is payable by any person  that is the
subject of any  proceeding  seeking to  adjudicate it a bankrupt or insolvent or
seeking  liquidation,  winding up or  reorganization,  arrangement,  adjustment,
protection,  relief or  composition of it or its debts under any law relating to
bankruptcy,  insolvency or  reorganization or relief or protection of debtors or
seeking the  appointment  of a receiver,  trustee,  custodian  or other  similar
official  for it or for any  substantial  part of its  property,  or that is not
generally  paying its debts as they  become due or has  admitted  in writing its
inability to pay its debts  generally or has made a general  assignment  for the
benefit of  creditors,  (g) which is  evidenced  by a  promissory  note or other
instrument,  (h) that is payable by any person,  the aggregate accounts owing to
CNG aggregate, are in excess of 10% of all Eligible CNG Accounts Receivable (but
only to the extent of the amount in excess of 10%),  unless such  receivable  is
secured  by a letter of  credit,  or (i) for which the  prospect  of  payment or
performance  is or will be impaired as determined by the Agent in its reasonable
discretion.


CREDIT AGREEMENT                                                          Page 6






     "Environmental Laws" at any date shall mean all provisions of law, statute,
ordinances, rules, regulations,  judgments, writs, injunctions, decrees, orders,
awards and  standards  promulgated  by the  government  of the United  States of
America or any foreign  government or by any state,  province,  municipality  or
other  political  subdivision  thereof  or  therein  or by  any  court,  agency,
instrumentality,  regulatory  authority or  commission  of any of the  foregoing
concerning the  protection  of, or regulating the discharge of substances  into,
the environment.

     "ERISA" shall mean the Employee  Retirement Income Security Act of 1974, as
amended from time to time,  together with any successor  statute thereto and the
regulations thereunder.

     "ERISA  Affiliate"  shall  mean  any  trade  or  business  (whether  or not
incorporated) which (i) together with the Borrowers or any Subsidiary,  would be
treated as a single employer under Section 414(b) or (c) of the Code or (ii) for
purposes of liability  under Section  412(C)(11)  of the Code,  the lien created
under  Section  412(n)  of the Code or for a tax  imposed  for  failure  to meet
minimum  funding  standards under Section 4971 of the Code, a member of the same
affiliated  service group (within the meaning of Section  401(m) of the Code) as
the  Borrowers or any  Subsidiary,  or any other trade or business  described in
clause (i) above.

     "Eurodollar  Base Rate" shall mean,  with respect to a Eurodollar  Loan for
the relevant  Eurodollar Interest Period, the rate determined by the Agent to be
the rate at which  First  Chicago  offers  to place  deposits  in  Dollars  with
first-class  banks in the  London  interbank  market  at  approximately  11 a.m.
(London  time) two  Business  Days  prior to the  first  day of such  Eurodollar
Interest  Period,  in  the  approximate   amount  of  First  Chicago's  relevant
Eurodollar  Loan and having a maturity  approximately  equal to such  Eurodollar
Interest Period.

     "Eurodollar  Interest Period" or "Interest Period" shall mean, with respect
to a Eurodollar Loan, a period of one, two, three or six months  commencing on a
Business  Day  selected  by the  Borrowers  pursuant  to  this  Agreement.  Such
Eurodollar Interest Period shall end on the day which corresponds numerically to
such date one, two, three or six months thereafter,  provided,  however, that if
there is no such numerically  corresponding day in such next,  second,  third or
sixth succeeding  month,  such Eurodollar  Interest Period shall end on the last
Business  Day of such  next,  second,  third or  sixth  succeeding  month.  If a
Eurodollar  Interest Period would otherwise end on a day which is not a Business
Day, such Eurodollar  Interest Period shall end on the next succeeding  Business
Day, provided, however, that if said next succeeding Business Day falls in a new
calendar  month,  such  Eurodollar  Interest Period shall end on the immediately
preceding Business Day.

     "Eurodollar  Loan" shall mean a Loan which bears  interest at a  Eurodollar
Rate.

     "Eurodollar  Rate" shall mean,  with respect to a  Eurodollar  Loan for the
relevant  Eurodollar  Interest  Period,  the sum of (i) the  quotient of (a) the
Eurodollar Base Rate applicable


CREDIT AGREEMENT                                                          Page 7





to such  Eurodollar  Interest  Period,  divided  by (b) one  minus  the  Reserve
Requirement  (expressed  as a decimal)  applicable to such  Eurodollar  Interest
Period, plus (ii) the Applicable Margin.

     "Event of Default" shall mean any of the events or conditions  described in
Section 8.1.

     "Federal  Funds Rate" shall mean,  for any day, an interest  rate per annum
equal  to  the  weighted  average  of  the  rates  on  overnight  Federal  funds
transactions  with  members of the Federal  Reserve  System  arranged by Federal
funds  brokers on such day, as published  for such day (or, if such day is not a
Business Day, for the immediately preceding Business Day) by the Federal Reserve
Bank of New York,  or, if such rate is not so  published  for any day which is a
Business Day, the average of the quotations at  approximately  10 a.m.  (Chicago
time) on such day on such transactions  received by the Agent from three Federal
funds  brokers  of  recognized  standing  selected  by the  Agent  in  its  sole
discretion.

     "Floating  Rate"  shall mean the per annum rate equal to the sum of (a) (i)
with  respect to Revolving  Credit  Loans,  the Term Loan and any other  amounts
owing hereunder other than the Bridge Loan, the Applicable Margin, and (ii) with
respect to the Bridge Loan, three percent (3.0%) per annum, plus (b) the greater
of (i) the per  annum  rate  announced  by the  Agent  from  time to time as its
"corporate  base rate",  and (ii) the sum of one-half  percent  (1/2%) per annum
plus the Federal Funds Rate,  such Floating Rate to change  simultaneously  with
any change in such  "corporate base rate" or Federal Funds Rate, as the case may
be;

all as  conclusively  determined  in good  faith  by the  Agent,  such sum to be
rounded up, if necessary, to the nearest whole multiple of 1/16 of 1%.

     "Floating  Rate Loan" shall mean any Loan bearing  interest at the Floating
Rate.

     "GAAP" shall mean generally  accepted  accounting  principles  applied on a
basis consistent with that reflected in the financial  statements referred to in
Section 6.7 hereof.

     "Guarantor"  shall mean each  present and future  Subsidiary  of any of the
Borrowers  (other than any Borrower and Comstock  DR-II Oil and Gas  Acquisition
Limited Partnership).

     "Guaranty" shall mean each guaranty of each Guarantor delivered at any time
pursuant to Section 5.2.

     "Hydrocarbons" shall mean oil, gas casinghead,  gas, drip gasoline, natural
gas and condensates and all other liquid or gaseous hydrocarbons.

     "Indebtedness"  of  any  person  shall  mean,  as  of  any  date,  (a)  all
obligations of such Person for borrowed  money,  (b) all  obligations  which are
secured by any lien or


CREDIT AGREEMENT                                                          Page 8





encumbrance  existing  on  property  owned  by such  Person  whether  or not the
obligation  secured  thereby shall have been assumed by such Person,  other than
those  obligations which are incurred in the ordinary course of business and are
not required to be shown as a liability on a balance  sheet in  accordance  with
GAAP, (c) all  obligations as lessee under any lease which,  in accordance  with
GAAP, is or should be capitalized  on the books of the lessee,  (d) the deferred
purchase price for goods,  property or services acquired by such Person, and all
obligations  of such Person to purchase such goods,  property or services  where
payment  therefore  is required  regardless  of whether or not  delivery of such
goods or property or the  performance of such services is ever made or tendered,
other than unsecured trade payables  incurred in the ordinary course of business
(e) all obligations of such Person to advance funds to, or to purchase  property
or services from, any other Person in order to maintain the financial  condition
of such Person,  (f) all  obligations  of such person in respect of any interest
rate or  currency  swap,  rate cap or other  similar  transaction  (valued in an
amount equal to the highest  termination  payment, if any, that would be payable
by such person upon termination for any reason on the date of termination),  and
(g) all  obligations  of such  person or of  others  for  which  such  person is
contingently liable, as guarantor,  surety or in any other similar capacity,  or
in respect of which  obligations  such person assures a creditor against loss or
agrees to take any action to prevent any such loss (other than  endorsements  of
negotiable  instruments  for  collection  in the ordinary  course of  business),
including  without  limitation all  reimbursement  obligations of such person in
respect of any letters of credit,  surety bonds or similar  obligations  and all
obligations of such person to advance funds to, or to purchase assets,  property
or services from, any other person in order to maintain the condition, financial
or otherwise, of such other person.

     "Interest  Payment  Date"  shall mean (a) with  respect to each  Eurodollar
Loan,  the last day of each  Eurodollar  Interest  Period  with  respect to such
Eurodollar  Loan and, in the case of any Eurodollar  Interest  Period  exceeding
three months, those days that occurred during such Eurodollar Interest Period at
intervals  of three  months  after  the first  day of such  Eurodollar  Interest
Period, (b) in all other cases, the last Business Day of each month,  commencing
with the first such day after the Effective Date, and (c) the  Termination  Date
with respect to Revolving Credit Loans, Maturity Date - Bridge Loan with respect
to the Bridge Loan and the  Maturity  Date - Term Loan with  respect to the Term
Loan.

     "Lending Installation" shall mean, with respect to a Bank or the Agent, any
office, branch, subsidiary or affiliate of such Bank or the Agent.

     "Letter of Credit"  shall mean a standby  letter of credit  having a stated
expiry date not later than  twelve  months  after the date of  issuance  and not
later than the fifth  Business Day before the  Termination  Date,  issued by the
Agent  on  behalf  of the  Banks  for the  account  of the  Borrowers  under  an
application and related documentation  acceptable to the Agent requiring,  among
other things,  immediate  reimbursement by the Borrowers to the Agent in respect
of all drafts or other demand for payment  honored  thereunder  and all expenses
paid or incurred by the Agent relative thereto.



CREDIT AGREEMENT                                                          Page 9





     "Letter of Credit  Advance"  shall mean any  issuance of a Letter of Credit
pursuant  to this  Agreement,  in which  each  Bank  acquires  a pro  rata  risk
participation.

     "Letter of Credit  Documents"  shall have the meaning  ascribed  thereto in
Section 3.3(b)(i).

     "Lien" shall mean any pledge, assignment, hypothecation, mortgage, security
interest,  deposit  arrangement,  option,  conditional  sale or title  retaining
contract,  sale and leaseback transaction,  financing statement filing, lessor's
or lessee's  interest under any lease,  subordination  of any claim or right, or
any other type of lien, charge,  encumbrance,  preferential arrangement or other
claim or right.

     "Loan  Documents"  shall  mean this  Agreement,  the  Notes,  the  Security
Documents, the environmental certificate and any other agreement,  instrument or
document  executed at any time  pursuant to, in  connection  with,  or otherwise
relating to this Agreement.

     "Loans" mean the Revolving Credit Loans, the Term Loan and the Bridge Loan.

     "Majority  Banks"  shall  mean  Banks  holding  not  less  than  66% of the
aggregate  principal  amount  of  the  Loans  then  outstanding  (or  66% of the
Commitments if no Loans are then outstanding).

     "Material Adverse Effect" shall mean a material adverse effect on or change
in (a) the business,  property  (including without limitation the Collateral and
further  including  without   limitation  the  Purchased  Black  Stone  Assets),
operations  or  condition,  financial or  otherwise,  of the  Borrowers  and the
Guarantors  on a  consolidated  basis,  (b) the  ability of any  Borrower or any
Guarantor to perform its obligations under any Loan Document or (c) the validity
or  enforceability or the rights and remedies of the Agent or any Bank under any
Loan Document.

     "Maturity Date - Bridge Loan" shall mean,  with respect to the Bridge Loan,
the  earlier  to occur of (a)  December  31,  1996 and (b) the date on which the
Bridge Loan shall be accelerated pursuant to Section 8.2.

     "Maturity Date - Term Loan" shall mean,  with respect to the Term Loan, the
earlier  to occur of (a) the  second  anniversary  of the date the Term  Loan is
made,  which in any event  shall be no later than the fifth  anniversary  of the
Effective  Date,  and (b) the date on which the Term Loan  shall be  accelerated
pursuant to Section 8.2.

     "Mortgages" shall have the meaning ascribed thereto in Section 5.1.

     "Multiemployer  Plan"  shall  mean any  "multiemployer  plan" as defined in
Section 4001(a)(3) of ERISA or Section 414(f) of the Code.


CREDIT AGREEMENT                                                         Page 10






     "1995  Preferred  Stock"  shall mean the  1,500,000  shares of Series  1995
Convertible Preferred Stock issued by CRI.

     "1994  Preferred  Stock"  shall  mean the  600,000  shares of  Series  1994
Convertible  Preferred  Stock  issued  by CRI and the  1,000,000  shares of 1994
Series B Convertible Preferred Stock issued by CRI.

     "Notes" means the Revolving Credit Notes and the Term Notes.

     "Oil and Gas  Interests"  shall mean all leasehold  interests,  mineral fee
interest,  overriding royalty and royalty interests, net revenue and net working
interest and all other rights and interests relating to Hydrocarbons,  including
without limitation any reserves thereof.

     "Overdue  Rate" shall mean (a) in respect of  principal  of  Floating  Rate
Loans, a rate per annum that is equal to the sum of three percent (3%) per annum
plus the Floating Rate, (b) in respect of principal of Eurodollar  Loans, a rate
per annum that is equal to the sum of three  percent (3%) per annum plus the per
annum  rate in  effect  thereon  until  the end of the then  current  Eurodollar
Interest Period for such Loan and, thereafter, a rate per annum that is equal to
the sum of three  percent  (3%) per annum  plus the  Floating  Rate,  and (c) in
respect of other amounts payable by the Company hereunder (other than interest),
a per annum rate that is equal to the sum of three  percent  (3%) per annum plus
the Floating Rate.

     "PBGC" shall mean the Pension Benefit  Guaranty  Corporation and any entity
succeeding to any or all of its functions under ERISA.

     "Permitted Liens" shall mean the Liens permitted by Section 7.2(e) hereof.

     "Person" shall include an  individual,  a corporation,  an  association,  a
partnership,  a trust  or  estate,  a joint  stock  company,  an  unincorporated
organization,  a joint  venture,  a government  (foreign or  domestic),  and any
agency or political subdivision thereof, or any other entity.

     "Plan"  shall mean,  with respect to any Person,  any  employee  benefit or
other plan (other than a Multiemployer  Plan)  maintained by such Person for its
employees  and covered by Title IV of ERISA or to which  Section 412 of the Code
applies.

     "Pro Rata Share" shall mean, as to obligations of the Banks, the percentage
set  forth  opposite  its  name  on the  signature  pages  hereof  or  otherwise
established  pursuant to Section  10.6.  As to  obligations  owing to the Banks,
shall mean:  (a) in the case of payments of principal and interest on the Loans,
in an amount  with  respect  to each Bank equal to the  product  of such  amount
received times the ratio which the outstanding  principal balance of its Note or
Notes bears to the outstanding  principal  balance of all Notes,  and (b) in the
case of all other amounts payable  hereunder (other than as otherwise noted with
respect to fees) and other


CREDIT AGREEMENT                                                         Page 11





amounts,  in an amount  with  respect to each Bank equal to the  product of such
amount  received  times the ratio which the Commitment of such Bank bears to the
Commitments of all Banks.

     "Proved Developed  Reserves" shall mean all Oil and Gas Interests which, to
the satisfaction of the Agent, are estimated,  with reasonable certainty, and as
demonstrated by geological and  engineering  data acceptable to the Agent, to be
economically  recoverable  from  existing  wells  requiring  no more than  minor
workover operations from existing  completion  intervals open for production and
which are producing, and have proven reserves of, Hydrocarbons.

     "Purchase Documents" shall mean all purchase agreements,  purchase and sale
agreements and other  agreements  and documents  between CRI and Black Stone and
certain  working  interest  owners  for the  purchase  by CRI of the  properties
described  therein,  together with all other agreements and documents  delivered
pursuant to Section 3.2(a)(xii).

     "Purchased  Black  Stone  Assets"  shall  mean  all oil and gas  interests,
capital  stock  and  other  assets  being  purchased  pursuant  to the  Purchase
Documents.

     "Reportable  Event" shall mean a  reportable  event as described in Section
4043(b) of ERISA  including  those events as to which the thirty (30) day notice
period is waived  under  Part 2615 of the  regulations  promulgated  by the PBGC
under ERISA.

     "Reserve  Requirement" means, with respect to a Eurodollar Interest Period,
the maximum aggregate reserve  requirement  (including all basic,  supplemental,
marginal and other reserves) which is imposed under Regulation D on Eurocurrency
liabilities.

     "Revolving  Credit  Advance"  shall mean any  Revolving  Credit Loan or any
Letter of Credit Advance.

     "Revolving  Credit Loan" means any loan under  Section 3.1 evidenced by the
Revolving Credit Notes and made pursuant to Section 2.1(a).

     "Revolving  Credit Note" shall mean any  promissory  note of the  Borrowers
evidencing the Revolving Credit Loans, in substantially  the form annexed hereto
as Exhibit C, as amended or  modified  from time to time and  together  with any
promissory note or notes issued in exchange or replacement therefor.

     "Security  Agreements"  shall have the meaning  ascribed thereto in Section
5.1.

     "Security  Documents"  shall have the meaning  ascribed  thereto in Section
5.1.

     "Subsidiary"  of any  person  shall  mean any  other  person  (whether  now
existing or hereafter  organized  or  acquired)  in which (other than  directors
qualifying shares required by


CREDIT AGREEMENT                                                         Page 12





law) at least a majority of the securities or other ownership  interests of each
class having  ordinary voting power or analogous right (other than securities or
other  ownership  interests which have such power or right only by reason of the
happening of a contingency),  at the time as of which any determination is being
made, are owned, beneficially and of record, by such person or by one or more of
the other  Subsidiaries  of such person or by any  combination  thereof.  Unless
otherwise specified, reference to "Subsidiary" shall mean a Subsidiary of CRI.

     "Subordinated  Debt" shall mean Indebtedness of CRI which satisfies each of
the following:

     (a) the aggregate principal amount thereof does not exceed $100,000,000;

     (b) the final maturity  thereof shall be no earlier than 10 years after its
issuance,  and there  shall be no  required  payments,  prepayments  (other than
required  prepayments  upon  a  change  of  control  and  upon a  disposal  of a
substantial amount of assets, in each case on terms and conditions acceptable to
the Majority Banks) or other defeasance thereof,  directly or indirectly,  prior
to such final maturity; and

     (c)  such  Indebtedness  shall  be  subordinated  to the  Bank  Obligations
pursuant to written subordination  provisions in form and substance satisfactory
to the Majority Banks.

     "Swap Agreement" shall mean any interest rate or oil and gas commodity swap
agreement,  interest  cap or collar  agreement or other  financial  agreement or
arrangement  designed to protect the  Borrowers or CNG against  fluctuations  in
interest rates or oil and gas prices.

     "Tangible  Net Worth" of any Person  shall  mean,  as of any date,  (a) the
amount of any capital stock or similar ownership liability plus (or minus in the
case of a deficit) the capital surplus and retained  earnings of such Person and
the amount of any foreign  currency  translation  adjustment  account shown as a
capital account of such Person,  less (b) the net book value of all items of the
following  character  which  are  included  in the  assets of such  Person:  (i)
goodwill,  including without  limitation,  the excess of cost over book value of
any asset,  (ii) organization or experimental  expenses,  (iii) unamortized debt
discount and expense, (iv) stock discount and expense, (v) patents,  trademarks,
trade names and  copyrights,  (vi)  treasury  stock,  (vii)  deferred  taxes and
deferred charges,  (viii) franchises,  licenses and permits,  and (ix) all other
assets  which are deemed  intangible  assets  under  GAAP;  provided,  that such
calculation  of  Tangible  Net Worth  under this  definition  shall not  include
receivables  of such Person which are owing by any Affiliate or advances by such
Person to any Affiliate.

     "Term Loan" means any  borrowing  under  Section 3.1  evidenced by the Term
Note and made pursuant to Section 2.1(b).



CREDIT AGREEMENT                                                         Page 13





     "Term Note" means any promissory note of the Borrowers  evidencing the Term
Loan,  in  substantially  the form  annexed  hereto as  Exhibit D, as amended or
modified from time to time and together with any promissory note or notes issued
in exchange or replacement therefor.

     "Termination  Date"  shall  mean the  earlier  to  occur  of (a) the  third
anniversary  of the  Effective  Date or such earlier date as the  Borrowers  may
elect, with five Business Days prior written notice to the Banks, to convert the
Revolving  Credit  Advances to the Term Loan under Section  2.1(b),  and (b) the
date on which the Commitments shall be terminated  pursuant to Section 2.1(a) or
8.2.

     "Total  Liabilities"  of  any  Person  shall  mean,  as of  any  date,  all
obligations  which,  in  accordance  with GAAP,  are or should be  classified as
liabilities on a balance sheet of such Person.

     "Type" shall mean,  with  respect to any Advance,  its nature as a Floating
Rate Loan, Eurodollar Loan or Letter of Credit Advance.

     1.2 Other  Definitions;  Rules of Construction.  As used herein,  the terms
"Agent," "Banks," "CRI", "COG", "COGL", "COE",  "Borrowers" and "this Agreement"
shall  have  the  respective  meanings  ascribed  thereto  in  the  introductory
paragraph of this Agreement.  Such terms,  together with the other terms defined
in Section 1.1, shall include both the singular and the plural forms thereof and
shall be construed  accordingly.  All  computations  required  hereunder and all
financial  terms used herein shall be made or construed in accordance  with GAAP
unless such principles are  inconsistent  with the express  requirements of this
Agreement.


     SECTION 2. The Commitments.

     2.1  Advances.  (a) Each Bank agrees,  for itself  only,  to advance and to
readvance,  subject  to the  terms  and  conditions  herein  set  forth,  to the
Borrowers at any time and from time to time from the Effective Date hereof until
the  Termination  Date  amounts  equal to such  Bank's  Pro  Rata  Share of such
aggregate  amounts as any Borrower may from time to time request,  provided that
no Revolving Credit Loans may be made if the aggregate outstanding amount of all
Revolving  Credit  Loans  to  all  Borrowers  would  exceed  the  lesser  of the
Commitments or the Borrowing  Base, and the aggregate  Letter of Credit Advances
may not exceed the lesser of $1,000,000 or the CNG/CRI  Guaranty  Formula.  Each
Loan made hereunder shall be evidenced by the Notes, which shall mature and bear
interest  as set forth in Section 4 hereof and in such Notes.  On the  Effective
Date, the Borrowers shall issue and deliver to each Bank a Revolving Credit Note
in the principal  amount of such Banks'  Commitment for the period  beginning on
the Effective  Date.  Each  Revolving  Credit Loan which is a Floating Rate Loan
shall be in a minimum  amount of $500,000 and in integral  multiples of $100,000
and each Revolving Credit Loan which is a Eurodollar Loan shall be in a minimum


CREDIT AGREEMENT                                                         Page 14





amount of $3,000,000  and in integral  multiples of  $1,000,000.  Subject to the
terms and  conditions  of this  Agreement,  the  Borrowers  may  borrow,  prepay
pursuant to Section 4.1(b) and reborrow under this Section 2.1(a). The Borrowers
shall have the right to terminate or reduce the Commitments at any time and from
time to  time,  provided  that  (i) the  Borrowers  shall  give  notice  of such
termination  or reduction to the Agent  specifying the amount and effective date
thereof,  (ii) each partial  reduction of the Commitments  shall be in a minimum
amount of $1,000,000  and in integral  multiples of $1,000,000  and shall reduce
the  Commitments  of all of the  Banks  proportionally  in  accordance  with the
respective  Commitment  amounts of each such Bank,  (iii) no such termination or
reduction,  either  in  whole  or part  and  including  without  limitation  any
termination,  shall be permitted with respect to any portion of the  Commitments
as to which a request for a Revolving Credit Advances is then pending,  and (iv)
the Commitments may not be terminated if any Revolving  Credit Advances are then
outstanding  and may not be  reduced  below the  principal  amount of  Revolving
Credit  Advances  then  outstanding,  for the benefit of Banks.  Notwithstanding
anything in this Agreement to the contrary, the Commitments shall be mandatorily
and automatically  reduced to an aggregate amount not to exceed  $110,000,000 or
such other greater amount agreed to in writing by the Majority  Banks,  upon the
issuance or other incurrence of any Subordinated  Debt, and such reduction shall
reduce the  Commitments of all the Banks  proportionally  in accordance with the
respected  Commitment  amounts of each such Bank. The Commitments or any portion
thereof so terminated or reduced may not be reinstated. Any Borrower may request
Revolving  Credit Advances  without the consent of any other Borrower,  and each
Borrower consents to and approves any Revolving Credit Advances requested by any
other Borrower.  The Revolving Credit Advances  hereunder  replace the revolving
credit  loans  outstanding  pursuant to Section  2.1(a) of the  Existing  Credit
Agreement and provide additional credit as described above.

          (b) Each Bank further  agrees,  for itself only,  subject to the terms
and  conditions  of this  Agreement  to make its Pro Rata Share of a single term
loan to the Borrowers on the Termination  Date, but not at any time  thereafter,
in an amount not to exceed the lesser of the amount of the Borrowing  Base as of
the  Termination  Date and the  aggregate  outstanding  principal  amount of the
Revolving Credit Advances.

          (c) Each Bank further  agrees,  for itself only,  subject to the terms
and conditions of this Agreement,  to make its Pro Rata Share of a single bridge
loan to the Borrowers on the Effective Date, but not at any time thereafter,  in
an  aggregate  amount not to exceed  $10,000,000.  This term loan  replaces  the
$10,000,000  term loan  outstanding  under the  Existing  Credit  Agreement  and
provides additional credit.

          (d)  Nothing  in this  Agreement  shall be  construed  to  require  or
authorize any Bank to issue any Letter of Credit,  it being  recognized that the
Agent has the sole obligation under this Agreement to issue Letters of Credit on
behalf of the Banks,  and the  Commitment of each Bank with respect to Letter of
Credit Advances is expressly  conditioned  upon the Agent's  performance of such
obligations.  Upon such  issuance  by the Agent,  each Bank shall  automatically
acquire a pro rata risk participation  interest in such Letter of Credit Advance
based


CREDIT AGREEMENT                                                         Page 15





on its respective  Commitment.  If the Agent shall honor a draft or other demand
for  payment  presented  or made  under any Letter of  Credit,  the Agent  shall
provide  notice thereof to each Bank on the date such draft or demand is honored
unless the Borrowers shall have satisfied their  reimbursement  obligation under
Section 3.3 by payment to the Agent on such date.  Each Bank, not later than the
Business  Day after the Agent  shall  have  given the  notice  specified  in the
previous sentence, shall make its pro rata share of the amount paid by the Agent
available in immediately  available  funds at the principal  office of the Agent
for the account of the Agent. If and to the extent such Bank shall not have made
any  required  pro rata  portion  available  to the Agent or made its portion of
Revolving Credit Loan available pursuant to Section 3.3(a)(i), such Bank and the
Borrowers  severally  agree to pay to the Agent  forthwith on demand such amount
together with interest thereon,  for each day from the date such amount was paid
by the Agent until such amount is so made available to the Agent at (i) the rate
per annum equal to the interest rate applicable to the related Loan disbursement
under  Section 3.3 for such day in the case of the Company and (ii) the rate per
annum equal to the Federal  Funds Rate for such day in the case of any Bank.  If
such Bank shall pay such amount to the Agent together with such  interest,  such
amount so paid shall  constitute a Revolving Credit Loan by such Bank as part of
the Revolving Credit Loans disbursed in respect of the reimbursement  obligation
of the Company under Section 3.3 for purposes of this Agreement.  The failure of
any Bank to make its pro rata  portion  of any  such  amount  paid by the  Agent
available  to the Agent shall not relieve  any other Bank of its  obligation  to
make  available  its pro  rata  portion  of such  amount,  but no Bank  shall be
responsible  for  failure  of any  other  Bank to make  such  pro  rata  portion
available to the Agent.


     SECTION 3. The Advances.

     3.1 Disbursement of Advances.  (a) Borrowers shall give notice to the Agent
of each requested Advance in substantially  the form of Exhibit E hereto,  which
notice  given shall be received by the Agent not later than 10:00 a.m.  (Chicago
time),  (i) three  Business  Days prior to the date such Loan is requested to be
made if such Loan is to be made as a  Eurodollar  Loan,  (ii) one  Business  Day
prior to the date such Loan is  requested  to be made if such Loan is to be made
as a Floating Rate Loan,  (iii) three Business Days prior to the date any Letter
of Credit  Advance is requested to be made, and (iv) five Business Days prior to
the date the Term Loan is requested to be made.  Each such notice given shall be
irrevocable  and binding on the  Borrowers,  any such  notice  must  specify the
Advance  Date,  which  shall be a Business  Day,  the  aggregate  amount of such
Advance,  the Type of Advance selected,  in the case of any Eurodollar Loan, the
Eurodollar Interest Period applicable thereto,  and in the case of any Letter of
Credit Advance such other information with respect thereto as may be required by
the Agent. The Agent shall provide notice of such requested Loan to each Bank on
the same Business Day such notice is received from the Borrowers. Subject to the
terms and conditions of this Agreement,  the Agent shall, on the date any Letter
of Credit Advance is requested to be made, issue the related Letter of Credit on
behalf of the Banks for the account of the Borrowers,  provided that in the case
of each Letter of Credit Advance the Borrowers  provide such  information as may
be


CREDIT AGREEMENT                                                         Page 16





necessary  for the  issuance  thereof by the Agent and execute  any  document in
connection therewith as may be requested by the Agent.  Notwithstanding anything
herein to the contrary,  the Agent may decline to issue any requested  Letter of
Credit on the basis that the  beneficiary,  the purpose of issuance or the terms
or conditions of drawing are illegal or contrary to a policy of the Agent.

          (b) Floating  Rate Loans shall  continue as Floating Rate Loans unless
and until such Floating Rate Loans are converted  into  Eurodollar  Loans.  Each
Eurodollar  Loan of any Type shall  continue as a  Eurodollar  Loan of such Type
until the end of the then  applicable  Interest Period  therefor,  at which time
such Eurodollar Loan shall be automatically  converted into a Floating Rate Loan
unless the Borrower shall have given the Agent a Conversion/Continuation  Notice
requesting that, at the end of such Interest Period, such Eurodollar Loan either
continue  as a  Eurodollar  Loan of such Type for the same or  another  Interest
Period or be  converted  into a Loan of  another  Type.  Subject to the terms of
Section 2.1, the Borrower may elect from time to time to convert all or any part
of a Loan of any Type into any other Type or Types of a Loan;  provided that any
conversion of any Eurodollar Loan shall be made on, and only on, the last day of
the Interest  Period  applicable  thereto.  The  Borrowers  shall give the Agent
irrevocable notice (a "Conversion/Continuation  Notice") of each conversion of a
Loan or  continuation  of a Eurodollar  Loan not later than 10:00 a.m.  (Chicago
time) at least one  Business  Day, in the case of a  conversion  into a Floating
Rate  Loan,  or  three  Business  Days,  in the  case  of a  conversion  into or
continuation of a Eurodollar Loan, prior to the date of the requested conversion
or continuation, specifying:

     (i)  the requested  date which shall be a Business Day, of such  conversion
          or continuation,

     (ii) the aggregate  amount and Type of the Loan which is to be converted or
          continued, and

     (iii)the  amount  and  Type(s)  of  Loan(s)  into  which such Loan is to be
          converted  or  continued  and,  in the  case of a  conversion  into or
          continuation of a Eurodollar Loan, the duration of the Interest Period
          applicable thereto.

          (c)  Subject  to the  terms  and  conditions  of this  Agreement,  the
proceeds of such  requested  Loan shall be made  available  to the  Borrowers by
depositing the proceeds thereof, in immediately  available funds, on the Advance
Date for such Loan in an account  maintained  and designated by the Borrowers at
the principal  office of the Agent.  Each Bank, on the Advance Date of each such
Loan  shall  make  its Pro Rata  Share of such  Loan  available  in  immediately
available  funds at the principal  office of the Agent for  disbursement  to the
Borrowers.  Unless the Agent shall have  received  notice from any Bank prior to
the date of any  requested  Loan under this  Section 3.1 that such Bank will not
make  available  to the Agent such Bank's Pro Rata  Share,  the Agent may assume
that such Bank has made such share available to


CREDIT AGREEMENT                                                         Page 17





the Agent on the  Advance  Date of such  Loan in  accordance  with this  Section
3.1(b).  If and to the  extent  such  Bank  shall not have so made such Pro Rata
Share available to the Agent, the Agent may (but shall not be obligated to) make
such amount  available to the Borrowers on the relevant  Advance Date,  and such
Bank agrees to pay to the Agent  forthwith on demand such amount  together  with
interest  thereon,  for each day from the date such amount is made  available to
the  Borrowers by the Agent until the date such amount is paid to the Agent,  at
the Federal  Funds Rate.  If such Bank shall pay to the Agent such amount,  such
amount so paid shall  constitute a Loan by such Bank as a part of such borrowing
for  purposes  of this  Agreement.  The failure of any Bank to make its Pro Rata
Share of any such Loan  available  to the Agent shall not relieve any other Bank
of its  obligations  to make  available  its Pro Rata  Share of such Loan on the
Advance Date of such Loan, but no Bank shall be  responsible  for failure of any
other Bank to make such Pro Rata  Share  available  to the Agent on the  Advance
Date of any such Loan.

          (d)  Notwithstanding  anything in this Agreement to the contrary,  the
Borrowers may not obtain a Eurodollar  Loan or convert any Floating Rate Loan to
a Eurodollar Loan if there is any amount outstanding under the Bridge Loan.

          (e) Each Bank may book its Loans at any Lending Installation  selected
by such Bank and may  change its  Lending  Installation  from time to time.  All
terms of this  Agreement  shall apply to any such Lending  Installation  and the
Notes  shall  be  deemed  held by each  Bank  for the  benefit  of such  Lending
Installation.  Each Bank may,  by written  or telex  notice to the Agent and the
Borrowers,  designate a Lending Installation through which Loans will be made by
it and for whose account Loan payments are to be made.

     3.2 Conditions of Advances.  The Banks and the Agent shall not be obligated
to make any Advance hereunder at any time unless:

          (a) Prior to or simultaneously with the first Advance hereunder, there
shall have been  delivered  to each Bank the  following  documents,  in form and
substance satisfactory to the Agent:

               (i) The  favorable  opinion of such counsel for the Borrowers and
each Guarantor,  as shall be approved by the Banks,  with respect to the matters
as requested by the Banks,  including  down-dated  title  opinions on 80% of the
value of the assets  acquired by the Borrowers  from Black Stone and opinions as
to such other  matters as the Banks shall  reasonably  request,  all in form and
substance satisfactory to the Majority Banks;

               (ii)  certified  copies  of  such  corporate  documents  of  each
Borrower and each  Guarantor,  including each  Borrower's  and each  Guarantor's
articles of  incorporation,  by-laws and a good standing  certificate,  and such
documents  evidencing necessary corporate action with respect to this Agreement,
the  Loans,  the  Notes  and  the  Security  Documents,  and  certifying  to the
incumbency of, and attesting to the genuineness of the


CREDIT AGREEMENT                                                         Page 18





signatures of, those  officers  authorized to act on behalf of each Borrower and
each Guarantor, as the Banks shall request;

               (iii) the Security  Documents  required as of the Effective  Date
under Section 5.1 duly  executed on behalf of the Borrowers and each  Guarantor,
together  with  evidence  of the  recordation,  filing and other  action in such
jurisdictions as the Banks may deem necessary or appropriate with respect to the
Security  Documents and evidence of the  first-priority  of the Banks' liens and
security  interests  under the  Security  Documents,  subject  only to Permitted
Liens,   including  without  limitation  such  additional  mortgages,   security
agreements,  pledge agreements, other documents and opinions of counsel required
by the Banks and original  stock  certificates  and  assignments  separate  from
certificate of each person whose stock is required to be pledged;

               (iv) the Notes duly executed on behalf of the  Borrowers,  and it
is  acknowledged  and agreed  that the Notes:  (A) are  issued in  exchange  and
replacement  for the  promissory  notes issued  pursuant to the Existing  Credit
Agreement,  (B)  shall  not be  deemed  a  novation  or to have  satisfied  such
promissory  notes  and (C)  evidence  the same  indebtedness  evidenced  by such
promissory notes plus additional indebtedness;

               (v) the Consent and Amendment of Security Documents duly executed
by the Borrowers and the Guarantors;

               (vi) Payment of such fees agreed to among the  Borrowers  and the
Agent;

               (vii) the execution by the  Borrowers  and each  Guarantor of the
Agent's standard environmental certificate;

               (viii) the Banks shall have  determined that the Loans to be made
are equal to or less than the Borrowing  Base, and such  determination  shall be
made by the Banks in their sole  discretion  and based upon their  evaluation of
the Borrowing Base;

               (ix)  copies  of  all   agreements   relating  to  any   material
Indebtedness  for borrowed  money,  any preferred  stock,  any joint ventures or
partnerships or any other material documents requested by the Banks;
 
               (x) the originals of all promissory notes payable to any Borrower
or any Guarantor,  other than promissory  notes in an aggregate amount less than
$50,000;

               (xi)   such   other   agreements,   documents,   conditions   and
certificates as reasonably requested by the Banks, including without limitation,
releases and terminations of all other Liens which are not permitted  hereunder,
assignment of the Purchase


CREDIT AGREEMENT                                                         Page 19





Documents,  amendments of existing Security Documents,  the establishment of all
primary bank  accounts of each  Borrower and each  Guarantor at a Bank (and each
agrees  to  maintain  such  accounts  at a  Bank),  all in  form  and  substance
satisfaction to the Banks;

               (xii) certified copies of all purchase  agreements,  purchase and
sale  agreements  and all  other  agreements  and  documents  executed  or to be
executed and delivered in connection  with the acquisition by CRI of certain oil
and gas  properties  and other  assets  from  Black  Stone and  certain  working
interest owners; and

               (xiii) evidence  satisfactory to the Majority Banks that, but for
the payment of a portion of the purchase  price to be paid by the initial  Loans
under this Agreement, the representations and warranties in the last sentence of
Section 6.12 are accurate.

          (b) The aggregate outstanding principal amount of all Revolving Credit
Loans or the Term Loan,  whichever is  outstanding,  after giving  effect to the
proposed  Loan,  does not exceed the lesser of the  Commitments or the Borrowing
Base,  and the aggregate  outstanding  principal  amount of all Letter of Credit
Advances, after giving effect to the proposed Letter of Credit Advance, does not
exceed the lesser of $1,000,000 or the CNG/CRI Guaranteed Formula.

          (c) On and as of the date of each such  Advance,  the  representations
and  warranties  contained  in Section 6 hereof shall be true and correct in all
material respects as if made on such date; provided,  however, that for purposes
of this Section 3.2(c) the representations  and warranties  contained in Section
6.7 hereof  shall be deemed made with respect to both the  financial  statements
referred to therein and the most recent financial  statements delivered pursuant
to Section 7.1(d)(ii) and (iii).

          (d) No  Default or event or  condition  which  could  cause a Material
Adverse   Effect  has  occurred  and  is  continuing  or  will  exist  upon  the
disbursement of such Advance.

Acceptance of the proceeds of any Advance  hereunder by the  Borrowers  shall be
deemed to be a  certification  by the Borrowers at such time with respect to the
matters set forth in subparagraphs (b), (c) and (d) of this Section 3.2.

     3.3 Letter of Credit Reimbursement Payments.  (a)(i) The Borrowers agree to
pay to the  Agent,  on the day on which the Agent  shall  honor a draft or other
demand for payment presented or made under any Letter of Credit, an amount equal
to the amount paid by the Agent in respect of such draft or other  demand  under
such Letter of Credit and all  expenses  paid or incurred by the Agent  relative
thereto.  Unless the Borrowers shall have made such payment to the Agent on such
day,  upon each such  payment  by the Agent,  the Agent  shall be deemed to have
disbursed to the Borrowers, and the Borrowers shall be deemed to have elected to
satisfy its reimbursement  obligation by borrowing,  a Revolving Credit Loan for
the account


CREDIT AGREEMENT                                                         Page 20





of the Banks in an amount equal to the amount so paid by the Agent in respect of
such draft or other demand under such Letter of Credit.  Such  Revolving  Credit
Loan shall be disbursed, and each Bank shall advance its Pro Rata Share thereof,
notwithstanding  any failure to satisfy any conditions for  disbursement  of any
Loan set forth in Section 3.2 or any other  condition  and, to the extent of the
Revolving  Credit  Loan  so  disbursed,  the  reimbursement  obligation  of  the
Borrowers under this Section 3.3 shall be deemed satisfied;  provided,  however,
that  such  disbursement  shall  not be  deemed  to be a waiver  of any Event of
Default or Default, if any.

               (ii) If for any reason (including  without limitation as a result
of the occurrence of an Event of Default with respect to the Borrowers or any of
its Subsidiaries  pursuant to Section 8.1(g),  Revolving Credit Loans may not be
made by the Banks as  described  in Section  3.3(a)(i),  then (A) the  Borrowers
agree that each reimbursement  amount not paid pursuant to the first sentence of
Section  3.3(a)(i)  shall bear interest,  payable on demand by the Agent, at the
interest rate then  applicable to Revolving  Credit Loans,  and (B) effective on
the date each such Revolving  Credit Loan would  otherwise have been made,  each
Bank severally agrees that it shall  unconditionally  and  irrevocably,  without
regard to the occurrence of any Default or Event of Default, in lieu of a deemed
disbursement  of Revolving  Credit Loans,  to the extent of such Bank's Pro Rata
Share, purchase a participating interest in each reimbursement amount. Each Bank
will  immediately  transfer to the Agent,  in same day funds,  the amount of its
participation.  Each  Bank  shall  share  on a pro  rata  basis  (calculated  by
reference to the Bank  Commitments) in any interest which accrues thereon and in
all  repayments  thereof.  If and to the extent  that any Bank shall not have so
made the amount of such participating interest available to the Agent, such Bank
and the  Borrowers  agree to pay to the Agent  forthwith  on demand  such amount
together  with  interest  thereon,  for each day from the date of  demand by the
Agent until the date such amount is paid to the Agent, at (x) in the case of the
Borrowers,  the interest  rate then  applicable  to Loans and (y) in the case of
such Bank, the Federal Funds Rate.

          (b) The reimbursement  obligations of the Borrowers under this Section
3.3 shall be absolute,  unconditional  and  irrevocable and shall remain in full
force and effect  until all  obligations  of the  Borrowers to the Agent and the
Banks hereunder shall have been satisfied, and such obligations of the Borrowers
shall not be  affected,  modified or impaired  upon the  happening of any event,
including without limitation,  any of the following,  whether or not with notice
to, or the consent of, the Borrowers:

               (i) Any lack of  validity  or  enforceability  of any  Letter  of
Credit  or  any  documentation  relating  to  any  Letter  of  Credit  or to any
transaction  related in any way to such Letter of Credit (the  "Letter of Credit
Documents");

               (ii) Any  amendment,  modification,  waiver  or  consent,  or any
substitution,  exchange  or release of or failure  to perfect  any  interest  in
collateral or security, with respect to any of the Letter of Credit Documents;



CREDIT AGREEMENT                                                         Page 21





               (iii) The existence of any claim, setoff,  defense or other right
which  the  Borrowers  may  have at any  time  against  any  beneficiary  or any
transferee of any Letter of Credit (or any persons or entities for whom any such
beneficiary or any such transferee may be acting) , the Agent or any Bank or any
other person or entity,  whether in connection  with any of the Letter of Credit
Documents,  the  transactions  contemplated  herein or therein or any  unrelated
transactions;

               (iv) Any draft or other statement or document presented under any
Letter of Credit proving to be forged,  fraudulent,  invalid or  insufficient in
any respect or any statement therein being untrue or inaccurate in any respect;

               (v) Payment by the Agent to the  beneficiary  under any Letter of
Credit against  presentation  of documents which do not comply with the terms of
the Letter of Credit,  including  failure of any documents to bear any reference
or adequate reference to such Letter of Credit;

               (vi)  Any  failure,  omission,  delay  or lack on the part of the
Agent or any Bank or any  party to any of the  Letter  of  Credit  Documents  to
enforce, assert or exercise any right, power or remedy conferred upon the Agent,
any Bank or any such party under this  Agreement  or any of the Letter of Credit
Documents,  or any other acts or omissions on the part of the Agent, any Bank or
any such party; or

               (vii) Any other event or circumstance  that would, in the absence
of this  clause,  result in the  release or  discharge  by  operation  of law or
otherwise of the Borrowers from the performance or observance of any obligation,
covenant or agreement contained in this Section 3.3.

No setoff,  counterclaim,  reduction  or  diminution  of any  obligation  or any
defense of any kind or nature  which the  Borrowers  has or may have against the
beneficiary  of any  Letter  of  Credit  shall  be  available  hereunder  to the
Borrowers against the Agent or any Bank. Nothing in this Section 3.3 shall limit
the  liability,  if any,  of the  Banks to the  Borrowers  pursuant  to  Section
10.5(c).

          (c) For  purposes of this  Agreement,  a Letter of Credit  Advance (i)
shall be deemed  outstanding in an amount equal to the sum of the maximum amount
available to be drawn under the related Letter of Credit on or after the date of
determination and on or before the stated expiry date thereof plus the amount of
any draws under such Letter of Credit that have not been  reimbursed as provided
in this  Section  3.3 and (ii) shall be deemed  outstanding  at all times on and
before  such  stated  expiry  date or such  earlier  date on which  all  amounts
available  to be drawn under such Letter of Credit  have been fully  drawn,  and
thereafter until all related  reimbursement  obligations have been paid pursuant
to Section 3.3. As provided in this  Section 3.3,  upon each payment made by the
Agent in respect of any draft or other  demand for  payment  under any Letter of
Credit, the amount of any Letter of Credit Advance


CREDIT AGREEMENT                                                         Page 22





outstanding  immediately prior to such payment shall be automatically reduced by
the amount of each  Revolving  Credit  Loan  deemed  advanced  in respect of the
related reimbursement obligation of the Borrowers.

          (d)  Each  Bank's  obligation  to  purchase  participating   interests
pursuant to Section 2.1(c) and this Section 3.3, and to comply with the terms of
Section  2.1(c) and this Section 3.3,  shall be absolute and  unconditional  and
shall not be affected by any circumstance,  including,  without limitation,  (i)
any set-off, counterclaim, recoupment, defense or other right which such Bank or
the Borrowers  may have against the Agent,  the Borrowers or anyone else for any
reason  whatsoever;  (ii) the occurrence or continuance of a Default or an Event
of Default;  (iii) any adverse change in the condition  (financial or otherwise)
of the  Borrowers;  (iv) any breach of this  Agreement  by the  Borrowers or any
other  Bank;  or (v) any  other  circumstance,  happening  or event  whatsoever,
whether or not similar to any of the foregoing.

     3.4.  Withholding  Tax Exemption.  At least five Business Days prior to the
first date on which  interest or fees are payable  hereunder  for the account of
any Bank, each Bank that is not incorporated under the laws of the United States
of  America,  or a state  thereof,  agrees  that it will  deliver to each of the
Borrowers  and the Agent two duly  completed  copies of United  States  Internal
Revenue  Service Form 1001 or 4224,  certifying in either case that such Bank is
entitled  to  receive  payments  under  this  Agreement  and the  Notes  without
deduction or withholding  of any United States  federal income taxes.  Each Bank
which so delivers a Form 1001 or 4224 further  undertakes  to deliver to each of
the Borrowers and the Agent two  additional  copies of such form (or a successor
form) on or before the date that such form expires (currently,  three successive
calendar  years for Form 1001 and one  calendar  year for Form  4224) or becomes
obsolete  or after the  occurrence  of any event  requiring a change in the most
recent forms so delivered by it, and such  amendments  thereto or  extensions or
renewals  thereof as may be reasonably  requested by the Borrowers or the Agent,
in each case  certifying  that such Bank is entitled to receive  payments  under
this  Agreement and the Notes  without  deduction or  withholding  of any United
States federal income taxes,  unless an event (including  without limitation any
change in treaty, law or regulation) has occurred prior to the date on which any
such  delivery  would  otherwise  be  required  which  renders  all  such  forms
inapplicable  or  which  would  prevent  such  Bank  from  duly  completing  and
delivering  any such form with respect to it and such Bank advises the Borrowers
and the Agent that it is not capable of receiving payments without any deduction
or withholding of United States federal income tax.



CREDIT AGREEMENT                                                         Page 23





     SECTION 4. Payment and Prepayment; Fees; Change in Circumstances.

     4.1 Principal Payments.

          (a) Unless  earlier  payment is  required  under this  Agreement,  the
Borrowers shall pay (i) the entire outstanding principal amount of the Revolving
Credit  Advances  on the  Termination  Date,  (ii) the Term Loan in  consecutive
quarterly installments each in an amount equal to 5% of the original outstanding
principal  amount of the Term Loan,  commencing with the date three months after
the Termination Date and each three months thereafter until the Maturity Date of
the Term Loan and shall pay the entire remaining outstanding principal amount of
the Term Loan on the Maturity Date - Term Loan and (iii) the entire  outstanding
principal amount of the Bridge Loan on the Maturity Date - Bridge Loan.

          (b) The Borrowers may from time to time prepay all or a portion of the
Advances without premium or penalty,  provided,  however, that (i) the Borrowers
shall have given not less than one Business  Day's prior written  notice thereof
to the Agent, (ii) other than mandatory payments,  each such prepayment,  in the
case of  prepayment of Floating  Rate Loans,  shall be in the minimum  amount of
$500,000 and in integral multiples of $100,000 and, in the case of prepayment of
Eurodollar Loans,  shall be in the minimum amount of $1,000,000 and in increment
integral multiples thereof, (iii) any prepayment of any Eurodollar Loan shall be
accompanied by any amount required pursuant to Section 4.10.

          (c) If it should be  determined by the Agent at any time and from time
to time that the principal  amount of the Revolving  Credit Advances or the Term
Loan, whichever is outstanding, exceeds the lesser of the then Borrowing Base or
the Commitments, the Borrowers shall promptly do one of the following:

               (i) In addition to all other  payments of principal  and interest
required  to be  paid on the  Revolving  Credit  Advances  and  the  Term  Loan,
whichever is  outstanding,  prepay,  upon demand and without premium or penalty,
the Revolving Credit Notes or the Term Notes,  whichever are outstanding,  in an
amount by which, in the  determination  of the Agent,  such aggregate  principal
amount  outstanding  exceeds  the  lesser  of the  then  Borrowing  Base  or the
Commitments; or

               (ii) Grant a lien and  security  interest  to the Agent,  for the
benefit of the Banks, in form and substance  satisfactory to the Majority Banks,
additional interests in Proved Developed Reserves of the Borrowers which, in the
determination  of the Majority  Banks,  will increase the  Borrowing  Base by an
amount such that the then  aggregate  principal  amount of the Revolving  Credit
Advances  does  not  exceed  the  lesser  of  the  then  Borrowing  Base  or the
Commitments; or

               (iii) Any combination of the foregoing acceptable to the Majority
Banks.


CREDIT AGREEMENT                                                         Page 24






          (d) In addition to all other payments required hereunder, if CRI shall
at any time issue or otherwise incur any Subordinated  Debt, the Borrowers shall
prepay the Advances by an amount equal to 100% of the net proceeds  (net only of
reasonable  and  customary  fees and costs of the issuance of such  Subordinated
Debt) of such Subordinated Debt, payable upon receipt of such proceeds, provided
that the amount of such proceeds shall be first applied to the Bridge Loan until
paid in full, and thereafter applied to the other outstanding Advances.

          (e) In  addition to all other  payments  of the Bridge  Loan  required
hereunder,  upon any sale or other disposition of any assets the Borrowers shall
prepay the Bridge Loan by an amount equal to 100% of the net proceeds  (net only
of reasonable  and customary  costs of such sale or other  disposition)  of such
sale or disposition which prepayment is due upon receipt of such net proceeds.

              All  determinations  made  pursuant to this  Section 4.1 shall be
made by the  Agent or the  Majority  Banks,  as the case  may be,  and  shall be
conclusively binding on the parties absent manifest error.

     4.2 Interest Payment.  (a) The Borrowers shall pay interest to the Banks on
the unpaid  principal amount of each Revolving Credit Loan and the Term Loan for
the period  commencing  on the date such Loan is made until such Loan is paid in
full, on each Interest Payment Date and at maturity (whether at stated maturity,
by acceleration or otherwise),  and thereafter on demand, at the following rates
per annum:  (i) during such periods that such Loan is a Floating Rate Loan,  the
Floating Rate, and (ii) during such periods that such Loan is a Eurodollar Loan,
the Eurodollar Rate applicable to such Loan for each related Eurodollar Interest
Period.

          (b) The  Borrowers  shall  pay  interest  to the  Banks on the  unpaid
principal amount of the Bridge Loan, for the period  commencing on the date such
Bridge  Loan is made  until the  Bridge  Loan is paid in full,  and at  maturity
(whether at stated  maturity,  by acceleration or otherwise),  and thereafter on
demand, at the Floating Rate.

          (c)  Notwithstanding  the  foregoing   paragraphs  (a)  and  (b),  the
Borrowers  hereby agree,  if requested by the Majority Banks, to pay interest on
demand at the Overdue Rate on the outstanding  principal  amount of any Loan and
any other amount payable by the Borrowers  hereunder  (other than interest) upon
and during the continuance of any Default.

     4.3 Fees.  (a) The  Borrowers  agree to pay to the Agent,  for the pro rata
account of the Banks,  a commitment  fee computed at the per annum rate equal to
the  Applicable  Margin  on the  amount  by which  the  Commitments  exceed  the
aggregate  outstanding  principal  amount of the Revolving Credit Loans, for the
period from the Effective Date until the Termination  Date,  which fees shall be
paid quarterly, on the last day of each March, June,


CREDIT AGREEMENT                                                         Page 25





September  and December  commencing  on the first such date after the  Effective
Date, and on the Termination Date.

          (b) The  Borrowers  agree (i) to pay to the Agent,  for the benefit of
the Banks, a fee equal to 1-1/2% per annum of the maximum amount available to be
drawn  under  each  Letter  of Credit at the time such fee is to be paid for the
period from and  including  the date of issuance of such Letter of Credit to and
including  the stated  expiry date of such Letter of Credit,  provided  that the
amount  payable  for any  quarter  under this  clause (i) shall be not less than
$500,  and  (ii) to pay an  additional  fee to the  Agent  for  its own  account
computed at the rate of one-quarter of one percent (1/4 of 1%) per annum of such
maximum amount for such period. Such fees shall be payable quarterly in advance,
payable on the date of the issuance of any Letter of Credit and each three month
interval thereafter.  Such fees are nonrefundable and the Borrowers shall not be
entitled to any rebate of any portion  thereof if such Letter of Credit does not
remain  outstanding  through  the date for which such fees have been  paid.  The
Borrowers  further agree to pay to the Agent,  on demand,  such other  customary
administrative  fees,  charges  and  expenses  of the  Agent in  respect  of the
issuance,  negotiation,  acceptance,  amendment,  transfer  and  payment of each
Letter of Credit or otherwise  payable  pursuant to the  application and related
documentation under which such Letter of Credit is issued.

          (c) The Borrowers  agree to pay to the Agent agency and servicing fees
for its  services  under this  Agreement  in such amounts as it may from time to
time be agreed upon  between  the  Borrowers  and the Agent,  which fee shall be
retained solely by the Agent.

     4.4 Payment Method. All payments to be made by the Borrowers hereunder will
be made in  Dollars  and in  immediately  available  funds  to the  Agent at its
address set forth in Section 10.2 not later than 11:00 a.m.  Chicago time on the
date on which such payment shall become due.  Payments received after 11:00 a.m.
Chicago  time shall be deemed to be  payments  made prior to 11:00 a.m.  Chicago
time on the next  succeeding  Business  Day.  At the time of  making  each  such
payment,  the  Borrowers  shall  specify  to the Agent  that  obligation  of the
Borrowers  hereunder  to which such  payment is to be applied,  or, in the event
that the  Borrowers  fails to so specify  or if an Event of  Default  shall have
occurred  and be  continuing,  the  Agent  may  apply  such  payments  as it may
determine in its sole  discretion.  On the day such payments are  received,  the
Agent  shall  remit  to the  Banks  their  respective  Pro Rata  Shares  of such
payments, in immediately available funds.

     4.5 No Setoff or  Deduction.  All  payments of principal of and interest on
the Advances and other amounts payable by the Borrowers  hereunder shall be made
by the  Borrowers  without  setoff or  counterclaim,  and free and clear of, and
without  deduction or  withholding  for, or on account of, any present or future
taxes, levies, imposts, duties, fees, assessments,  or other charges of whatever
nature, imposed by any governmental authority,  or by any department,  agency or
other political subdivision or taxing authority.



CREDIT AGREEMENT                                                         Page 26





     4.6 Payment on Non-Business Day; Payment Computations.  Except as otherwise
provided  in  this  Agreement  to the  contrary,  whenever  any  installment  of
principal  of, or interest on, any Advances  outstanding  hereunder or any other
amount due  hereunder,  becomes due and payable on a day which is not a Business
Day, the maturity thereof shall be extended to the next succeeding  Business Day
and, in the case of any  installment  of  principal,  interest  shall be payable
thereon  at the rate per annum  determined  in  accordance  with this  Agreement
during such extension. Computations of interest and other amounts due under this
Agreement shall be made on the basis of a year of 360 days for the actual number
of days  elapsed,  including  the  first day but  excluding  the last day of the
relevant period.

     4.7. Yield Protection. If any law or any governmental or quasi-governmental
rule,  regulation,  policy,  guideline or  directive  (whether or not having the
force of law),  or any  interpretation  thereof,  or the  compliance of any Bank
therewith,

     (i)  subjects any Bank or any applicable  Lending  Installation to any tax,
          duty, charge or withholding on or from payments due from the Borrowers
          (excluding  federal  taxation of the overall net income of any Bank or
          applicable Lending Installation),  or changes the basis of taxation of
          payments  to any Bank in respect of its Loans or other  amounts due it
          hereunder, or

     (ii) imposes or increases  or deems  applicable  any  reserve,  assessment,
          insurance  charge,  special  deposit  or similar  requirement  against
          assets of, deposits with or for the account of, or credit extended by,
          any Bank or any applicable Lending  Installation  (other than reserves
          and  assessments  taken into account in determining  the interest rate
          applicable to Eurodollar Loans), or

     (iii)imposes any other  condition  the result of which is to  increase  the
          cost to any Bank or any  applicable  Lending  Installation  of making,
          funding or maintaining  loans or reduces any amount  receivable by any
          Bank or any applicable Lending  Installation in connection with loans,
          or requires any Bank or any applicable  Lending  Installation  to make
          any payment  calculated  by  reference  to the amount of loans held or
          interest received by it, by an amount deemed material by such Bank,

then,  within 30 days of demand by such Bank, the Borrowers  shall pay such Bank
that  portion of such  increased  expense  incurred  or  reduction  in an amount
received  which such Bank  determines  is  attributable  to making,  funding and
maintaining its Loans and its Commitment.

     4.8.  Changes in Capital  Adequacy  Regulations.  If a Bank  determines the
amount of capital  required  or  expected  to be  maintained  by such Bank,  any
Lending  Installation of such Bank or any corporation  controlling  such Bank is
increased as a result of a Change,


CREDIT AGREEMENT                                                         Page 27





then,  within 15 days of demand by such Bank, the Borrowers  shall pay such Bank
the amount  necessary to  compensate  for any shortfall in the rate of return on
the portion of such increased capital which such Bank determines is attributable
to this Agreement,  its Loans or its obligation to make Loans  hereunder  (after
taking into account such Bank's policies as to capital adequacy). "Change" means
(i) any  change  after  the date of this  Agreement  in the  Risk-Based  Capital
Guidelines or (ii) any adoption of or change in any other law,  governmental  or
quasi-governmental  rule,  regulation,  policy,  guideline,  interpretation,  or
directive  (whether  or not  having  the  force of law)  after  the date of this
Agreement  which  affects  the  amount of capital  required  or  expected  to be
maintained  by  any  Bank  or  any  Lending   Installation  or  any  corporation
controlling any Bank.  "Risk-Based  Capital Guidelines" means (i) the risk-based
capital guidelines in effect in the United States on the date of this Agreement,
including  transition  rules,  and (ii) the  corresponding  capital  regulations
promulgated by regulatory authorities outside the United States implementing the
July 1988 report of the Basle  Committee on Banking  Regulation and  Supervisory
Practices  Entitled  "International  Convergence  of  Capital  Measurements  and
Capital  Standards,"  including  transition  rules,  and any  amendments to such
regulations adopted prior to the date of this Agreement.

     4.9.  Availability  of  Types of  Advances.  If any  Bank  determines  that
maintenance of its Eurodollar  Loans at a suitable  Lending  Installation  would
violate any  applicable  law,  rule,  regulation,  or directive,  whether or not
having the force of law, or if the Majority Banks determine that (i) deposits of
a type and maturity appropriate to match fund Eurodollar Loans are not available
or (ii) the interest rate  applicable  to a Type of Advance does not  accurately
reflect the cost of making or  maintaining  such  Advance,  then the Agent shall
suspend  the  availability  of the  affected  Type of Advance  and  require  any
Eurodollar Loans of the affected Type to be repaid.

     4.10. Funding  Indemnification.  If any payment of a Eurodollar Loan occurs
on a date which is not the last day of the applicable  Interest Period,  whether
because of  acceleration,  prepayment or otherwise,  or a Eurodollar Loan is not
made on the date specified by the Borrowers for any reason other than default by
the Banks,  the Borrowers will indemnify each Bank for any loss or cost incurred
by it resulting therefrom,  including,  without limitation,  any loss or cost in
liquidating  or employing  deposits  acquired to fund or maintain the Eurodollar
Loan.

     4.11.  Bank  Statements;  Survival of Indemnity.  To the extent  reasonably
possible,  each Bank shall  designate an  alternate  Lending  Installation  with
respect to its Eurodollar Loans to reduce any liability of the Borrowers to such
Bank  under  Sections  4.7 and 4.8 or to avoid the  unavailability  of a Type of
Advance under Section 3.3, so long as such designation is not disadvantageous to
such  Bank.  Each Bank  shall  deliver a written  statement  of such Bank to the
Borrowers  (with  a copy to the  Agent)  as to the  amount  due,  if any,  under
Sections 4.7, 4.8 or 4.10. Such written  statement shall set forth in reasonable
detail the calculations upon which such Bank determined such amount and shall be
final, conclusive and binding on the Borrowers in the absence of manifest error.
Determination of amounts payable under such Sections in


CREDIT AGREEMENT                                                         Page 28





connection with a Eurodollar Loan shall be calculated as though each Bank funded
its  Eurodollar  Loan through the purchase of a deposit of the type and maturity
corresponding  to the deposit used as a reference in determining  the Eurodollar
Rate  applicable to such Loan,  whether in fact that is the case or not.  Unless
otherwise  provided herein, the amount specified in the written statement of any
Bank shall be payable on demand after  receipt by the  Borrowers of such written
statement.  The  obligations  of the Borrowers  under Sections 4.7, 4.8 and 4.10
shall survive payment of the Bank Obligations and termination of this Agreement.


     SECTION 5. Security.

     5.1 Security  Documents.  To secure amounts due under this  Agreement,  the
Notes, and to secure all other  Indebtedness and obligations of the Borrowers to
the Agent and the Banks, whether direct or indirect, absolute or contingent, due
or to become due, now existing or hereafter  arising,  the Borrowers  shall, and
shall cause each Guarantor to:

          (a) Execute and deliver to the Agent, on or before the Effective Date,
such  indentures of mortgage,  deeds of trust,  security  agreements,  financing
statements and assignment of production and other agreements,  including without
limitation  any  amendments  to  any  such  documents  previously  executed  and
delivered in favor of the Agent or any Bank (as amended or modified from time to
time, the "Mortgages" and together with the Security Agreements,  the Guaranties
and all agreements and documents described in this Section 5.1(a) and in 5.1(b),
5.2 and 5.3 and all other agreements and documents  securing or guaranteeing any
of the Bank  obligations  at any time or  otherwise  executed by any Borrower or
Guarantor  with or in favor of the Agent and the Banks,  and  including  without
limitation the Letter of Credit  Documents,  as amended or modified from time to
time,  the  "Security  Documents"),  in form and substance  satisfactory  to the
Majority  Banks,   granting  the  Agent,   for  the  benefit  of  the  Banks,  a
first-priority,  perfected and enforceable lien and security  interest,  subject
only to the  Permitted  Liens,  in the following  (collectively,  with all other
assets described in Section 5.1(b), the "Collateral"):  all oil, gas and mineral
properties and all other assets of the Borrowers and each  Guarantor,  including
without  limitation all leasehold and royalty  interests and all other rights in
connection  therewith,  and all  interests in machinery,  equipment,  materials,
improvements,  hereditaments,  appurtenances and other property,  real, personal
and/or  mixed,  now or hereafter a part of or obtained in or used in  connection
with such  properties and all interests in and to any and all oil, gas and other
minerals now in storage or now or hereafter  located in,  under,  on or produced
from,  such  properties and an assignment of production  from such properties to
the Agent;

          (b) Execute and deliver to the Agent, on or before the Effective Date,
such security  agreements,  pledge  agreement,  financing  statements  and other
agreements,  including without  limitation the Consent and Amendment of Security
Documents  confirming the continuing  effectiveness  of previously  executed and
delivered  to the Agent or any Bank (as amended or  modified  from time to time,
the "Security Agreements"), in form and substance


CREDIT AGREEMENT                                                         Page 29





satisfactory  to the Majority Banks,  granting to the Agent,  for the benefit of
the Banks,  a first-  priority,  perfected  and  enforceable  lien and  security
interest,  subject only to the Permitted  Liens,  in all other  assets,  whether
real,  personal  or mixed,  and  whether  now owned or  hereafter  existing  and
wherever located, of the Borrowers and each Guarantor;  provided,  however, that
the  Borrowers and the  Guarantors  shall not be required to grant a lien on, or
security  interest in, the assets  described on Schedule 5.1 for so long as they
are  contractually  prohibited from doing so, and each of the Borrowers and each
of the Guarantors represent that they are contractually prohibited from granting
liens on, or security  interest  in, the assets  described  on Schedule  5.1 and
agree not to enter into any further restrictions with respect thereto.

     5.2 Guaranty. To confirm its guarantee of all indebtedness, obligations and
liabilities of the Borrowers owing to the Banks, whether under this Agreement or
otherwise,  the Borrowers  shall cause each Guarantor to deliver the Consent and
Amendment of Security Documents  confirming the continuing  effectiveness of the
guaranty agreements  previously executed by each Guarantor (the "Guaranties") in
favor of the Agent or Banks, in form and substance  satisfactory to the Majority
Banks.

     5.3 Additional Security Documents. If at any time requested by the Agent or
the Majority  Banks,  the Borrowers  shall,  and shall cause each  Guarantor to,
execute and deliver such additional documents, and shall take such other action,
as the Agent or the Majority Banks may reasonably  consider  necessary or proper
to evidence or perfect the liens and security interests described in Section 5.1
hereof and grant the guaranties  described in Section 5.2. Immediately after the
acquisition is completed pursuant to the Purchase Documents, the Borrowers agree
that they  shall  cause  Black  Stone to  execute a  Guaranty  and all  Security
Documents in order to grant a lien and security  interest in all assets of Black
Stone,  and COG shall execute such  documents to grant a first lien and security
interest on all capital  stock of Black  Stone,  together  with  delivery to the
Agent of the  original  of all  stock  certificates  pledged  thereby  and other
documents in  connection  therewith  requested by the Agent,  including  without
limitation all board resolutions, officer certificates and legal opinions.


     SECTION 6. Representations and Warranties.

     Each of the  Borrowers  and each of the  Guarantors  represent  and warrant
that:

     6.1 Corporate  Existence and Power.  It is a  corporation  duly  organized,
validly  existing and in good standing under the laws of the jurisdiction of its
incorporation, and is duly qualified to do business and in good standing in each
additional  jurisdiction  where  failure  to so  qualify  would  have a Material
Adverse Effect.  It has all requisite  corporate power to own its properties and
to carry on its business as now being conducted and as proposed to be conducted,
and to execute and deliver this Agreement,  the Notes and the Security Documents
and to engage in the transactions  contemplated by this Agreement, the Notes and
the Security Documents.



CREDIT AGREEMENT                                                         Page 30





     6.2 Corporate Authority.  The execution,  delivery and performance by it of
this  Agreement,  the Notes and the Security  Documents are within its corporate
powers,  have been duly authorized by all necessary corporate action and are not
in contravention of any law, rule or regulation, or any judgment,  decree, writ,
injunction,  order or award of any arbitrator,  court or governmental authority,
or of the terms of its charter or by-laws,  or of any contract or undertaking to
which it is a party or by which it or its property may be bound or affected.

     6.3  Binding  Effect.  This  Agreement  is, and the Notes and the  Security
Documents to which it is a party when delivered  hereunder will be, legal, valid
and binding obligations of each Borrower and each Guarantor, enforceable against
each in accordance with their respective terms.

     6.4  Subsidiaries.  All  Subsidiaries  of CRI are duly  organized,  validly
existing  and in  good  standing  under  the  laws  of  their  jurisdictions  of
incorporation and are duly qualified to do business in each  jurisdiction  where
failure to so qualify  would have a Material  Adverse  Effect.  All  outstanding
shares of capital  stock of each class of each  Subsidiary  of CRI have been and
will be validly issued and are and will be fully paid and  nonassessable and are
and will be owned,  beneficially  and of record,  by CRI,  free and clear of any
Liens.  Schedule 6.4 is a complete list of all Subsidiaries of CRI. Each of COG,
COE, CMC (provided that  notwithstanding  anything  herein to the contrary it is
acknowledged  and agreed that CMC may be dissolved or  liquidated  if all of its
assets are  transferred to a Borrower) and CNG is and will remain a wholly-owned
Subsidiary  of CRI,  COGL is and will remain a  wholly-owned  Subsidiary of COG,
after completion of the acquisition of the Purchase Documents,  Black Stone will
be wholly-owned  subsidiary of COG and will remain a wholly-owned  subsidiary of
COG, and CPI is and, without the prior written consent of the Agent, will remain
a wholly-owned Subsidiary of CNG.

     6.5 Liens.  The properties of each Borrower and each  Guarantor  (including
without  limitation the Collateral) are not subject to any Lien except Permitted
Liens.

     6.6 Litigation.  There is no action,  suit or proceeding pending or, to the
best of its  knowledge,  threatened  against  or  affecting  it before or by any
court, governmental authority, or arbitrator which would be reasonably likely to
result in, either  individually or collectively,  a Material Adverse Effect and,
to the best of the Borrowers' knowledge,  there is no basis for any such action,
suit or proceeding.

     6.7  Financial  Condition.  The  consolidated  balance sheet of CRI and its
Subsidiaries and the consolidated  statements of income and cash flow of CRI and
its  Subsidiaries for the fiscal year ended December 31, 1995 and reported on by
Arthur  Andersen,  LLP, copies of which have been furnished to the Bank,  fairly
present,  and  the  financial  statements  of CRI  and  its  Subsidiaries  to be
delivered  pursuant  to Section  7.1(d) will fairly  present,  the  consolidated
financial  position of CRI and its Subsidiaries and is at their respective dates
thereof,  and the consolidated results of operations of CRI and its Subsidiaries
for their respective periods


CREDIT AGREEMENT                                                         Page 31





indicated,  all in accordance  with  generally  accepted  accounting  principles
consistently  applied.  There has been no event or development  which has had or
would be reasonably  likely to have a Material Adverse Effect since December 31,
1995.  There  is  no  material  Contingent  Liability  of  CRI  or  any  of  its
Subsidiaries that is not reflected in such financial  statements or in the notes
thereto.

     6.8 Use of  Advance.  Neither any  Borrower  nor any  Guarantor  extends or
maintains, in the ordinary course of business,  credit for the purpose,  whether
immediate,  incidental,  or ultimate, of buying or carrying margin stock (within
the meaning of  Regulation U of the Board of  Governors  of the Federal  Reserve
System),  and no  part of the  proceeds  of each  Advance  will be used  for the
purpose, whether immediate,  incidental,  or ultimate, of buying or carrying any
such margin stock or maintaining or extending credit to others for such purpose.
After  applying  the  proceeds  of the  Advances,  such  margin  stock  will not
constitute  more than 25% of the value of the  assets  that are  subject  to any
provisions  of this  Agreement  or any  Security  Document  that may  cause  the
Advances to be secured, directly or indirectly by margin stock.

     6.9  Security  Documents.   The  Security  Documents  create  a  valid  and
enforceable first-priority lien on and perfected security interest in all right,
title and interest of each Borrower and each  Guarantor in and to the Collateral
described  therein,   securing  all  amounts  intended  to  be  secured  thereby
(including  without  limitation  all  principal  of and  interest  on the Notes)
subject only to the Permitted  Liens.  The respective  net revenue  interests of
each  Borrower in and to the Oil and Gas  Interests as set forth in the Security
Documents  are true and correct and  accurately  reflect the  interests to which
each Borrower is legally entitled, subject only to the Permitted Liens.

     6.10  Consents,   Etc.  No  consent,   approval  or   authorization  of  or
declaration,  registration  or filing  with any  governmental  authority  or any
nongovernmental  person or entity,  including without limitation any creditor or
stockholder  of it,  is  required  on the  part  of it in  connection  with  the
execution,  delivery and performance of this Agreement,  the Notes, the Security
Documents  or the  transactions  contemplated  hereby or as a  condition  to the
legality,  validity or enforceability of this Agreement, the Notes or any of the
Security Documents.

     6.11  Taxes.  It has  filed all tax  returns  (federal,  state  and  local)
required to be filed and has paid all taxes shown  thereon to be due,  including
interest and penalties,  or has established adequate financial reserves on their
respective books and records for payment thereof, except where the failure to do
so would not have a Material Adverse Effect.

     6.12 Title to Properties.  It has good and defensible title to, and a valid
indefeasible ownership interest in, all of its properties and assets (including,
without  limitation,  the Collateral subject to the Security Documents) free and
clear of any Lien  except the  Permitted  Liens,  and it is the owner of all the
Collateral described in the Security Documents to which it is a party. All wells
on any of the mortgaged premises have been drilled, operated, shut-in,


CREDIT AGREEMENT                                                         Page 32





abandoned or suspended in accordance  with good oil and gas field  practices and
in compliance with all applicable laws,  permits,  statutes,  orders,  licenses,
rules and  regulations.  All leases  with  respect to any Oil and Gas  Interests
owned by the  Borrowers or any  Guarantor  are in good  standing and are in full
force and effect, all royalties,  rents,  taxes,  assessments and other payments
thereunder  or with respect  thereto have been  properly and timely paid and all
conditions  necessary  to  keep  such  leases  in full  force  have  been  fully
performed,  including  without  limitation any condition to maintain  continuous
production or other activity with respect thereto. All transactions contemplated
pursuant  to the  Purchase  Documents  have been  completed,  including  without
limitation the  acquisition by COG of the Purchased  Black Stone Assets and have
been completed in accordance  with all applicable  laws and  regulations and COG
owns the Purchased Black Stone Assets free and clear of all Liens other than the
first priority, perfected and enforceable lien and security interest in favor of
the Agent for the benefit of the Banks.

     6.13 ERISA.  CRI and its  Subsidiaries and their Plans are in compliance in
all material  respects with those  provisions of ERISA and of the Code which are
applicable  with respect to any Plan. No prohibited  transaction  (as defined in
Section 406 of ERISA and Section 9975 of the Code) and no  reportable  event (as
defined in ERISA) has occurred with respect to any Plan. Neither CRI, any of its
Subsidiaries  nor any of its ERISA Affiliates is an employer with respect to any
multiemployer  plan (as  defined  in Section  4001(a)(3)  of  ERISA).  CRI,  its
Subsidiaries and the ERISA Affiliates have met the minimum funding  requirements
under ERISA and the Code with respect to each of the respective  Plans,  if any,
and  have not  incurred  any  liability  to the  PBGC or any  Plan.  There is no
unfunded benefit liability with respect to any Plan.

     6.14 Environmental and Safety Matters.  It is in compliance in all material
respects  with all federal,  state and local laws,  ordinances  and  regulations
relating to safety and  industrial  hygiene or to the  environmental  condition,
including without limitation all Environmental Laws in jurisdictions in which it
owns any  interest in or operates,  a well, a facility or site,  or arranges for
disposal or treatment of hazardous  substances,  solid waste,  or other  wastes,
accepts for transporting any hazardous substances, solid waste, or other wastes,
or holds any  interest in real  property  or  otherwise,  except  where any such
noncompliance  would not have a  Material  Adverse  Effect.  No  demand,  claim,
notice, suit, suit in equity, action,  administrative  action,  investigation or
inquiry whether brought by any governmental authority,  private person or entity
or otherwise, arising under, relating to or in connection with any Environmental
Laws is pending or its best of any Borrower's  knowledge  threatened against it,
any real  property  in which  it  holds or has held an  interest  or any past or
present  operation  of  it.  It (a)  does  not  know  of any  federal  or  state
investigation  evaluating  whether any remedial action is needed to respond to a
release of any toxic  substances,  radioactive  materials,  hazardous  wastes or
related  materials into the environment,  (b) has not received any notice of any
toxic substances,  radioactive  materials,  hazardous waste or related materials
in, or upon any of its  properties in violation of any  Environmental  Laws, and
(c) does not know of any basis for any such investigation,  notice or violation.
No material release, threatened release or disposal of


CREDIT AGREEMENT                                                         Page 33





hazardous  waste,  solid waste or other  wastes is occurring or has occurred on,
under or to any real  property in which it holds any interest or performs any of
its  operations,  in  violation  of any  Environmental  Law which  would  have a
Material Adverse Effect.

     6.15 Direct  Benefit.  The initial  Advances  hereunder and all  additional
Advances are for the direct benefit of each of the Borrowers and the Guarantors,
and the initial Advances hereunder are used to acquire the Purchased Black Stone
Assets and to refinance and replace indebtedness owing,  directly or indirectly,
by the  Borrowers  and the  Guarantor  to the Banks  under the  Existing  Credit
Agreement.  The Borrowers and the Guarantors are engaged as an integrated  group
in the business of oil and gas exploration and related fields,  and any benefits
to any Borrower or any  Guarantor is a benefit to all of them,  both directly or
indirectly,  inasmuch as the successful operation and condition of the Borrowers
and the Guarantors is dependent upon the continued successful performance of the
functions of the integrated group as a whole.

     6.16  Solvency.  Each of the  following is true for each  Borrower and each
Guarantor and the Borrowers and the Guarantors on a consolidated  basis: (a) the
fair saleable  value of its property is (i) greater than the total amount of its
liabilities (including contingent liabilities), and (ii) greater than the amount
that would be  required  to pay its  probable  aggregate  liability  on its then
existing  debts as they become  absolute  and  matured;  (b) its property is not
unreasonable  in relation  to its  business or any  contemplated  or  undertaken
transaction; and (c) it does not intend to incur, or believe that it will incur,
debts beyond its ability to pay such debts as they become due.

     6.17  Disclosure.  This  Agreement and all other  documents,  certificates,
reports or statements or other information furnished to any Bank or the Agent in
writing by or on behalf of any Borrower in connection  with the  negotiation  or
administration  of this Agreement or any transactions  contemplated  hereby when
read together do not contain any untrue  statement of a material fact or omit to
state a material fact necessary in order to make the statements contained herein
and therein not  misleading.  There is no fact known to any  Borrower  which has
caused,  or which likely would in the future in the  reasonable  judgment of the
Borrowers,  cause a Material Adverse Effect (except for any economic  conditions
which  affect   generally   the  industry  in  which  the  Borrowers  and  their
Subsidiaries  conduct business),  which has not been set forth in this Agreement
or  in  the  other  documents,  certificates,   statements,  reports  and  other
information furnished in writing to the Banks by or on behalf of any Borrower in
connection with the transactions contemplated hereby.


     SECTION 7. Covenants.

     7.1 Affirmative  Covenants.  Each Borrower covenants and agrees that, until
the  Termination  Date and  expiration  of all Letters of Credit and  thereafter
until the payment in full of the principal of and accrued  interest on the Notes
and the performance of all other


CREDIT AGREEMENT                                                         Page 34





obligations of the Borrowers  under this  Agreement,  the Notes and the Security
Documents, unless the Majority Banks shall otherwise consent in writing, each of
the Borrowers and each of the Guarantors shall:

          (a) Preservation of Corporate  Existence,  Etc.  Preserve and maintain
its  corporate  existence,  rights and  privileges  and its  material  licenses,
franchises and permits,  and qualify and remain  qualified as a validly existing
corporation in good standing in each jurisdiction in which such qualification is
necessary under applicable law.

          (b) Compliance with Laws,  Etc.  Comply in all material  respects with
all  applicable  laws,  rules,   regulations  and  orders  of  any  governmental
authority,   whether  federal,   state,  local  or  foreign  (including  without
limitation ERISA, the Code and Environmental Laws), in effect from time to time;
and pay and discharge promptly when due all taxes,  assessments and governmental
charges or levies  imposed  upon it or upon its income,  revenues  or  property,
before the same shall  become  delinquent  or in default,  as well as all lawful
claims for labor,  materials and supplies or otherwise,  which, if unpaid, might
give rise to Liens upon such  properties or any portion  thereof,  except to the
extent that  payment of any of the  foregoing  is then being  contested  in good
faith by  appropriate  legal  proceedings  and with  respect  to which  adequate
financial reserves have been established on its books and records.

          (c)  Maintenance  of  Properties;  Insurance.  Maintain,  preserve and
protect all  property  that is material to the conduct of its  business and keep
such property in good repair,  working order and condition and from time to time
make, or cause to be made all needful and proper repairs,  renewals,  additions,
improvements  and  replacements  thereto  necessary  in order that the  business
carried on in  connection  therewith  may be properly  conducted at all times in
accordance with customary and prudent business practices for similar businesses;
comply with all applicable permits,  statutes, laws, orders, licenses, rules and
regulations  relating to the Oil and Gas  Interests  owned by it, unless any non
compliance would not cause a Material Adverse Effect,  and ensure that all wells
and other properties operated by it, either in its own name or as a partner, are
operated in accordance with good oil and gas field practices; comply with all of
its duties and obligations  under, and take all actions to maintain,  consistent
with  prudent oil and gas  practices,  all leases and other rights in full force
and  effect;  and, in addition to that  insurance  required  under the  Security
Documents,  maintain in full force and effect  insurance  with  responsible  and
reputable insurance companies or associations in such amounts, on such terms and
covering such risks,  including fire and other risks insured against by extended
coverage,  as is usually carried by companies engaged in similar  businesses and
owning  similar  properties  similarly  situated  and maintain in full force and
effect public liability insurance,  insurance against claims for personal injury
or death or property  damage  occurring in connection with any of its activities
or any of any properties owned,  occupied or controlled by it, in such amount as
it shall reasonably deem necessary,  and maintain such other insurance as may be
required by law or as may be  reasonably  requested by the Banks for purposes of
assuring compliance with this Section 7.1(c).



CREDIT AGREEMENT                                                         Page 35





          (d)  Reporting  Requirements.  Furnish to each Bank,  in form and sub-
stance satisfactory to the Majority Banks, the following:

               (i)  Promptly and in any event within three  calendar  days after
                    becoming aware of the occurrence of (A) any Default, (B) the
                    commencement  of  any  material  litigation  against,  by or
                    affecting the Borrowers  and, upon request by any Bank,  any
                    material developments therein, or (C) any development in the
                    business or affairs of the Borrowers  which has resulted in,
                    or  which  is  likely  in  the  reasonable  judgment  of the
                    Borrowers to result in  (including  without  limitation  the
                    entering into of any material contract and/or undertaking by
                    the  Borrowers)  a  Material   Adverse  Effect  or  (D)  any
                    "reportable  event"  (as  defined  in ERISA)  under,  or the
                    institution  of steps by the Borrowers or any  Subsidiary to
                    withdraw from, or the institution of any steps to terminate,
                    any Plan, a statement of the chief financial  officer of the
                    Borrowers  setting  forth  details  of such  Default or such
                    event or condition or such  litigation  and the action which
                    CRI or any  Subsidiary  has taken and  proposes to take with
                    respect thereto;

               (ii) As soon as  available  and in any event within 45 days after
                    the end of each  fiscal  quarter  of CRI,  the  consolidated
                    balance sheets of CRI and its  Subsidiaries as of the end of
                    such  quarter,  and the related  consolidated  statements of
                    income and cash flow for the period commencing at the end of
                    the  previous  fiscal  year and ending  with the end of such
                    quarter,  setting forth in each case in comparative form the
                    corresponding  figures for the corresponding  date or period
                    of the preceding  fiscal year, all in reasonable  detail and
                    duly certified (subject to year-end audit adjustments) by an
                    appropriate officer of the Borrowers as having been prepared
                    in accordance with generally accepted accounting principles,
                    together with a certificate of an appropriate officer of the
                    Borrowers   with  a   computation   in   reasonable   detail
                    calculating the covenants contained in Sections 7.2(a), (b),
                    (c), (i), (j) and (l) hereof;

               (iii)As soon as available  and in any event within 120 days after
                    the  end of each  fiscal  year,  a copy of the  consolidated
                    balance  sheet of CRI and its  Subsidiaries  for the  fiscal
                    year and related  statements  of income and cash flow with a
                    customary  audit  report  thereon by Arthur  Andersen LLP or
                    other independent  certified public accountants  selected by
                    CRI and  acceptable  to the  Banks,  without  qualifications
                    unacceptable  to the Banks  together with a  certificate  of
                    such  accountants  stating  that  they  have  reviewed  this
                    Agreement and stating further that in making their review in
                    accordance  with generally  accepted  accounting  principles
                    nothing came to their  attention that made them believe that
                    any Default  exists,  or if their  examination has disclosed
                    the existence of any Default,  specifying the nature, period
                    of existence and status thereof, together with a certificate
                    of  an   appropriate   officer  of  the  Borrowers   with  a
                    computation


CREDIT AGREEMENT                                                         Page 36





                    in reasonable detail  calculating the covenants  contained
                    in Sections 7.2(a), (b), (c), (i), (j) and (l) hereof;

               (iv) Upon the  request  of the  Majority  Banks or the  Agent,  a
                    schedule  of all oil,  gas,  and  other  mineral  production
                    attributable  to all  material  Oil and Gas  Interest of the
                    Borrowers and each Guarantor,  and in any event all such Oil
                    and Gas Interests included in the Borrowing Base;

               (v)  Promptly,  all title or other information received after the
                    Effective  Date  by the  Borrowers  or any  Guarantor  which
                    discloses  any material  defect in the title to any material
                    asset included in the Borrowing Base;

               (vi) As soon as practicable and in any event within 30 days after
                    the sending or filing thereof,  copies of all such financial
                    statements  and  reports  as it shall  send to its  security
                    holders and of all final  prospectuses  under the Securities
                    Act of 1933  (other  than Form S-8),  reports on Forms 10-Q,
                    10-K and 8-K and all similar  regular and  periodic  reports
                    filed  by  it  (i)  with  any  federal  department,  bureau,
                    commission  or agency from time to time having  jurisdiction
                    with  respect  to the sale of  securities  or (ii)  with any
                    securities exchange;

               (vii)As soon as available  and in any event within 105 days after
                    the end of each calendar year, an annual reserve report with
                    respect to all Hydrocarbon reserves of the Borrowers and the
                    Guarantors  prepared by an independent  engineering  firm of
                    recognized  standing  acceptable  to the  Majority  Banks in
                    accordance  with accepted  industry  practices and otherwise
                    acceptable  and in form and  substance  satisfactory  to the
                    Majority Banks, and including without  limitation all assets
                    included in the Borrowing Base;

               (viii) Upon the request of the Banks,  an updated  reserve report
                    with respect to all  Hydrocarbon  reserves of the  Borrowers
                    and the  Guarantors  prepared by the Borrowers in accordance
                    with accepted  industry  practices and otherwise  acceptable
                    and in  form  and  substance  satisfactory  to the  Majority
                    Banks, and including without  limitation all assets included
                    in the Borrowing Base;

               (ix) Promptly,  any  management  letter from the auditors for any
                    Borrower and all other information  respecting the business,
                    properties  or the  condition  or  operations,  financial or
                    otherwise,  including,  without  limitation,  geological and
                    engineering  data of any Borrower or any  Guarantor  and any
                    title work with respect to any Oil and Gas  Interests of any
                    Borrowers or any Guarantor as any Bank may from time to time
                    reasonably request;

               (x)  At all times  after  the date  ninety  (90)  days  after the
                    Effective Date, if requested by the Majority Banks,  provide
                    title opinions and


CREDIT AGREEMENT                                                        Page 37





                    other  opinions  of  counsel,  in  each  case  in  form  and
                    substance  acceptable to the Majority Banks, with respect to
                    at least  eighty  (80%)  percent  of the value of the assets
                    included in the Borrowing Base; and

               (xi) As soon as  available  and in any event within 45 days after
                    the end of each month,  (A) the  balance  sheet of CNG as of
                    the end of each month, and the related  statements of income
                    for the period  commencing at the end of the previous fiscal
                    year and ending with the end of such month, setting forth in
                    each case in comparative form the corresponding  figures for
                    the  corresponding  date or period of the  preceding  fiscal
                    year, all in reasonable  detail and duly certified  (subject
                    to year-end audit adjustments) by an appropriate  officer of
                    CNG as having been  prepared in  accordance  with  generally
                    accepted accounting  principles,  (B) a schedule of accounts
                    receivable of CNG,  certified by an  appropriate  officer of
                    CNG, as of the end of such month,  indicating  the totals of
                    accounts  receivable  by type,  and by age,  describing  any
                    returns, defenses, setoffs or other pertinent information in
                    connection  therewith,  together with evidence of letters of
                    credit supporting Eligible CNG Accounts Receivable,  and (C)
                    a computation,  certified by an appropriate  officer of CNG,
                    of the CNG/CRI Guaranty Formula as of the end of such month.

               (e) Access to Records,  Books,  Etc. At any  reasonable  time and
from time to time, permit any Bank or any agents or representatives  thereof, at
the Borrowers' own expense, to examine and make copies of and abstracts from the
records and books of account of, and visit the  properties of, the Borrowers and
the  Guarantors,  and to discuss  the  affairs,  finances  and  accounts  of the
Borrowers  and the  Guarantors  with their  respective  officers and  employees.
Without limiting the foregoing,  the Borrowers and the Guarantors agree that any
reasonable time and from time to time, the Borrowers will permit any Bank or any
agents or representatives thereof to inspect, at the office of the Borrowers and
the Guarantors listed on its signature page hereto, all opinions with respect to
title and other material work received by the Borrowers or the  Guarantors  with
respect to any asset included in the Borrowing Base.

     7.2  Negative  Covenants.  Until  payment in full of the  principal  of and
accrued  interest on the Notes, the expiration of this Agreement and all Letters
of Credit  and the  payment  and  performance  of all other  obligations  of the
Borrowers and each Guarantor  under this  Agreement,  the Notes and the Security
Documents,  each  Borrower and each  Guarantor  agree that,  unless the Majority
Banks shall otherwise consent in writing, none of them shall:

               (a) Current  Ratio.  Permit or suffer the ratio of (i) the sum of
Current Assets plus the unused  availability under the revolving credit facility
established  by Section  2.1(a),  to (ii) Current  Liabilities at any time to be
less than 1.0 to 1.0.

               (b) Tangible Net Worth.  Permit or suffer  Consolidated  Tangible
Net Worth of CRI and its  Subsidiaries  to be less than, at any time, the sum of
(i) $25,000,000, plus


CREDIT AGREEMENT                                                        Page 38





                         (ii)  50% of  Consolidated  Net  Income  of CRI and its
                    Subsidiaries for any fiscal year, commencing with the fiscal
                    year ending  December  31,  1996,  and to be added as of the
                    last day of each such  fiscal  year,  provided  that if such
                    Consolidated  Net Income is  negative in any fiscal year the
                    amount added  pursuant to this clause (ii) shall be zero and
                    shall not reduce the amount  added  pursuant  to this clause
                    (ii) for any  other  fiscal  year,  plus (iv) 75% of the net
                    cash proceeds of any equity offering or other sale of equity
                    of CRI or any of its Subsidiaries.

               (c) Interest Coverage Ratio. Permit or suffer, as of the last day
of any fiscal quarter of CRI, the ratio of (i)  Consolidated  Adjusted Cash Flow
plus, to the extent  deducted in  determining  such  Consolidated  Adjusted Cash
Flow, Consolidated Interest Expense and income taxes, as calculated for the four
fiscal  quarters  then  ending,  to  (ii)  Consolidated   Interest  Expense,  as
calculated for the four fiscal quarters then ending,  to be less than (A) 2.5 to
1.0 as of the  last  day of any  fiscal  quarter  ending  prior  to the  initial
issuance of any  Subordinated  Debt of at least  $75,000,000 in principal amount
and (B) 2.0 to 1.0 as of the last day of any fiscal quarter thereafter.

               (d)  Indebtedness.  Create,  incur,  assume,  guaranty  or in any
manner become liable in respect of, or suffer to exist, any  Indebtedness  other
than:

                    (i) The Advances;

                    (ii) The  Indebtedness  described in Schedule 7.2(d) hereto,
                         including any  refinancing or extension  thereof but no
                         increase in the amount thereof shall be permitted;

                    (iii)Other Indebtedness in aggregate  outstanding amount not
                         to exceed $1,000,000;

                    (iv) Unsecured  insurance premium financing  incurred in the
                         ordinary course of business;

                    (v)  Indebtedness  pursuant to any Swap  Agreement  with any
                         Bank,  any person with an investment  grade debt rating
                         acceptable to the Agent and any other person acceptable
                         to the Agent;

                    (vi) Indebtedness permitted pursuant to Section 7.2(i); and

                    (vii)Subordinated  Debt in aggregate  outstanding  principal
                         amount not to exceed $100,000,000.

               (e) Liens. Create, incur or suffer to exist, any Lien to exist on
any assets, rights,  revenues or property,  real, personal or mixed, tangible or
intangible, other than:



CREDIT AGREEMENT                                                        Page 39





                                    (i) Liens for  taxes not  delinquent  or for
                  taxes being contested in good faith by appropriate proceedings
                  and  as  to  which  adequate   financial  reserves  have  been
                  established on its books and records;

                         (ii) Liens (other than any Lien imposed by
                  ERISA)  created  and  maintained  in the  ordinary  course  of
                  business  which are not material in the  aggregate,  and which
                  would not have a Material  Adverse Effect and which constitute
                  (A)  pledges or deposits  under  worker's  compensation  laws,
                  unemployment  insurance laws or similar legislation,  (B) good
                  faith deposits in connection with bids, tenders,  contracts or
                  leases to which any Borrower or any Guarantor is a party for a
                  purpose  other  than  borrowing  money  or  obtaining  credit,
                  including  rent security  deposits,  (C) liens imposed by law,
                  such  as  those  of  carriers,  warehousemen,   operators  and
                  mechanics, if payment of the obligation secured thereby is not
                  yet  due,  (D)  Liens  securing  taxes,  assessments  or other
                  governmental  charges or levies not yet  subject to  penalties
                  for  nonpayment,  and (E) pledges or deposits to secure public
                  or statutory obligations of any Borrower or any Guarantor,  or
                  surety, customs or appeal bonds to which such Borrower or such
                  Guarantor is a party;

                         (iii)Liens  created pursuant to the Security  Documents
                  and Liens expressly permitted by the Security Documents;

                         (iv) Each Lien described on Schedule  7.2(e) hereto may
                  be suffered  to exist upon the same terms as those  existing
                  on the  date  hereof,  but no  increase  in  the  amount  of
                  Indebtedness secured thereby; and

                         (v) Liens securing  Indebtedness  permitted pursuant to
                    Section  7.2(d)(iii)  created to secure payment of a portion
                    of the  purchase  price  of,  or  existing  at the  time  of
                    acquisition  of, any  tangible  fixed asset  acquired by any
                    Borrower  or  any  Guarantor  if the  outstanding  principal
                    amount of the Indebtedness  secured by such Lien does not at
                    any time exceed the purchase  price paid by such Borrower or
                    such Guarantor for such assets, provided that such Lien does
                    not  encumber  any  other  asset at any  time  owned by such
                    Borrower or such Guarantor.

               (f) Merger;  Acquisitions;  Etc.  Purchase or otherwise  acquire,
whether in one or a series of  transactions,  unless the  Majority  Banks  shall
otherwise  consent in writing,  all or any  substantial  portion of the business
assets,  rights,  revenues or  property,  real,  personal or mixed,  tangible or
intangible,  of any  person,  or all or any  substantial  portion of the capital
stock  of or  other  ownership  interest  in any  other  person,  provided  that
Borrowers may make such purchases or other acquisitions provided that the Bridge
Loan has been fully paid and the  aggregate  amount paid or payable or otherwise
transferred  for all such  purchases or other  acquisitions  after the Effective
Date shall not exceed $20,000,000 (excluding the Purchased


CREDIT AGREEMENT                                                        Page 40





Black  Stone  Assets)  in  aggregate  amount in any  fiscal  year;  nor merge or
consolidate or amalgamate  with any other person or take any other action having
a similar effect,  nor enter into any joint venture or similar  arrangement with
any  other  person,  other  than a  joint  venture  or  similar  arrangement  in
connection with oil and gas drilling ventures,  oil and gas leases,  natural gas
transportation  or  processing  or  otherwise  in  connection  with  oil and gas
properties in the ordinary  course of business.  Each of the Banks  acknowledges
and agrees that it has previously  provided  consent to each acquisition by each
Borrower and each Guarantor prior to the Effective Date pursuant to the terms of
the Existing Credit Agreement.

               (g) Disposition of Assets; Etc. Without the prior written consent
of the Majority  Banks,  sell,  lease,  license,  transfer,  assign or otherwise
dispose of any Collateral or any of its other business, assets, rights, revenues
or property, real, personal or mixed, tangible or intangible,  whether in one or
a series of  transactions,  other than (i) inventory sold in the ordinary course
of business upon customary credit terms, and (ii) if no Default has occurred and
is continuing or would be caused thereby, other sales of assets in (A) aggregate
amount not to exceed  $1,000,000  in any twelve month  period and (B)  aggregate
amount  exceeding  $1,000,000  in any  twelve  month  period  provided  that  in
connection  with any such sale all the  proceeds  thereof are used to prepay the
Advances and reduce the Commitments by a like amount.

               (h) Nature of Business. Make any substantial change in the nature
of its business from that engaged in on the date of this  Agreement or engage in
any other businesses other than those in which it is engaged on the date of this
Agreement.

               (i) Investments,  Advance and Advances,  Contingent  Liabilities.
Purchase or otherwise  acquire any capital stock of or other ownership  interest
in, or debt  securities  of or other  evidences  of  Indebtedness  of, any other
person; nor make any loan or advance of any of its funds or property or make any
other  extension  of credit to, or make any  investment  or acquire any interest
whatsoever  in, any other  person,  except (i) loans and advances to officers of
the Borrowers, provided that the aggregate amount of all such loans and advances
does not exceed $5,000,  (ii) loans and advances among the Borrowers only, (iii)
other loans and advances,  provided that the aggregate  amount of all such loans
and advances,  together  with  Indebtedness  allowed under Section  7.2(d)(iii),
shall not  exceed  $1,000,000  and (iv) loans and  advances  by CRI to CNG in an
aggregate amount not to exceed  $5,000,000,  the proceeds of which shall be used
in  connection  with the purchase of pipeline and  marketing  operations  and to
provide  ongoing  working  capital  for such  entity;  nor incur any  Contingent
Liability  except for any guaranty of the  permitted  Indebtedness  described in
Section  7.2(d)(i),  guarantees by CRI of obligations of CNG to purchase natural
gas in an aggregate  amount  outstanding at any time not to exceed the lesser of
(A)  $2,000,000  minus the  aggregate  outstanding  Letters of Credit or (B) the
CNG/CRI Guaranty Formula minus the aggregate  outstanding  Letters of Credit and
(v) the indebtedness described on Schedule 7.2(i), if any.



CREDIT AGREEMENT                                                        Page 41





               (j) Dividends.  With respect to CRI only,  make, pay,  declare or
authorize any dividend, payment or other distribution in respect of any class of
its capital stock or any dividend,  payment or  distribution  in connection with
the  redemption,   repurchase,   defeasance,  conversion,  retirement  or  other
acquisition,  directly or indirectly, of any shares of its capital stock, except
(i) solely in shares of capital stock of CRI and (ii) cash  dividends in respect
of 1994 Preferred Stock only in aggregate amount not to exceed $1,174,000 in any
twelve  month  period and only if both before the payment of such cash  dividend
and after giving effect to the payment of such cash dividend no Default or Event
of Default shall have occurred and be continuing  and the Bridge Loan shall have
been paid in full and (iii) cash  dividends  in  respect  to the 1995  Preferred
Stock only in an aggregate  amount not to exceed  $1,372,500 in any twelve month
period and only if both before the  payment of such  dividend  and after  giving
effect to the payment of such  dividend to no Default or Event of Default  shall
have  occurred  and be  continuing  and the Bridge  Loan shall have been paid in
full. For purposes of this Section 7.2(j), "capital stock" shall include capital
stock  (preferred,  common  or other)  and any  securities  exchangeable  for or
convertible  into capital  stock and any  warrants,  rights or other  options to
purchase or otherwise acquire capital stock or such securities.

               (k) Transactions with Affiliates. Enter into or be a party to any
transaction or arrangement with any Affiliate  (including,  without  limitation,
the purchase from, sale to or exchange of property with, or the rendering of any
service by or for, any Affiliate), except in the ordinary course of and pursuant
to the reasonable requirements of the Borrowers' or the Guarantors' business and
upon  fair and  reasonable  terms no less  favorable  to such  Borrower  or such
Guarantor than would be obtained in a comparable arms-length  transaction with a
Person  other than an Affiliate  and except the loans and advances  described in
Section 7.2(i).

               (l) Subordinated Debt. Make, or permit any Subsidiary to make any
amendment  or  modification  to  the  indenture,  note  or  other  agreement  or
instrument  evidencing or governing any Subordinated Debt, other than amendments
which  do not  affect  any of the  material  terms of the  Subordinated  Debt as
determined by the Agent and which require only the approval of the trustee under
the indenture  under which the  Subordinated  Debt was issued and do not require
the approval of any holder of the  Subordinated  Debt, or directly or indirectly
voluntarily prepay, defease or in substance defease, purchase, redeem, retire or
otherwise acquire or make any other optional payment on, any Subordinated  Debt,
other than prepayments of Subordinated  Debt which satisfy both of the following
conditions:  (i) both prior to and after  giving  effect to such  prepayment  no
Default  exists or would be caused  thereby and (ii) such  prepayment  is solely
from  proceeds  received by CRI from the issuance of common stock of CRI or from
proceeds  received by CRI from the issuance of Subordinated Debt permitted under
this Agreement.

               (m) Payments and Modification of Debt. Other than Indebtedness to
the Banks and the Agent pursuant hereto and prepayments of Subordinated  Debt to
the extent permitted by Section 7.2(l),  make, or permit any Subsidiary to make,
any optional payment,


CREDIT AGREEMENT                                                        Page 42





prepayment or redemption,  directly or indirectly, of any of its Indebtedness or
enter into any agreement or arrangement providing for the defeasance of any such
Indebtedness,  or amend or  modify,  or  consent  or agree to any  amendment  or
modification of, any instrument or agreement under which any of its Indebtedness
is issued or created or otherwise  related  thereto,  provided that this Section
7.2(m)  shall not  prohibit  the  prepayment  of such  Indebtedness  (other than
Subordinated  Debt which is governed by Section  7.2(l)) if no Default exists or
would exist after giving effect to such  prepayment and the aggregate  amount of
all such  prepayments  since the  Effective  Date does not exceed  $2,000,000 in
aggregate amount.

               (n) Additional Covenants. If at any time any Borrower shall enter
into  or  be a  party  to  any  instrument  or  agreement,  including  all  such
instruments  or  agreements  in  existence  as of the date  hereof  and all such
instruments  or  agreements  entered into after the date hereof,  relating to or
amending any terms or  conditions  applicable to any of its  Indebtedness  which
includes covenants, terms, conditions or defaults not substantially provided for
in this  Agreement or more  favorable to the lender or lenders  thereunder  than
those  provided for in this  Agreement,  then the  Borrowers  shall  promptly so
advise the Agent and the Banks.  Thereupon,  if the Agent  shall  request,  upon
notice to the Borrowers,  the Agents and the Banks shall enter into an amendment
to this  Agreement  or an  additional  agreement  (as the  Agent  may  request),
providing for substantially the same covenants,  terms,  conditions and defaults
as those provided for in such instrument or agreement to the extent required and
as may be selected by the Agents.  In addition to the foregoing,  any covenants,
terms,  conditions  or defaults in any existing  agreements  or other  documents
evidencing  or relating to any  Indebtedness  of any Borrower not  substantially
provided  for in  this  Agreement  or  more  favorable  to the  holders  of such
Indebtedness,  are hereby  incorporated  by reference into this Agreement to the
same extent as if set forth fully herein, and no subsequent amendment, waiver or
modification  thereof  shall effect any such  covenants,  terms,  conditions  or
defaults as incorporated herein.


                  SECTION 8.        Default.

                  8.1  Events  of  Default.  The  occurrence  of any  one of the
following events or conditions  shall be deemed an "Event of Default"  hereunder
unless waived by the Majority Banks pursuant to Section 10.1:

               (a) Any Borrower shall fail to pay within 2 Business Days of when
due any  principal  of or  interest  on the Notes  (whether  pursuant to Section
4.1(a),  Section  4.1(c) or  otherwise),  any fees or any other  amount  payable
hereunder or under any Security Document; or

               (b) Any  representation  or warranty made by any Borrowers or any
Guarantor in Section 6 hereof, in any Security Document or any other document or
certificate  furnished  by or on  behalf of any  Borrower  or any  Guarantor  in
connection  with  this  Agreement,  shall  prove to have been  incorrect  in any
material respect when made; or


CREDIT AGREEMENT                                                        Page 43






               (c) (i) Any  Borrower or any  Guarantor  shall fail to perform or
observe any term,  covenant or agreement  contained in Sections  7.1(b),  7.1(c)
(other than the agreement to maintain continuous  insurance  coverage),  7.1(d),
7.2(a),  7.2(b), 7.2(c) or 7.2(l) hereof or in any Security Document,  any other
Loan Document or any other agreement among the Borrowers,  Guarantors, the Banks
and the Agent,  or any of them, and such failure shall remain  unremedied for 30
calendar days after the earlier of the date notice thereof shall have been given
to Borrowers by the Agent or any Bank or any Borrower knows of such failure,  or
(ii) any  Borrower or any  Guarantor  shall fail to perform or observe any other
term, covenant, or agreement contained in this Agreement; or

               (d) Any Borrower or any  Guarantor  shall fail to pay any part of
the principal of, the premium,  if any, or the interest on, or any other payment
of money due under any of its Indebtedness (other than Indebtedness  hereunder),
beyond any period of grace provided with respect thereto,  which individually or
together with other such Indebtedness as to which any such failure exists has an
aggregate  outstanding  principal  amount  in excess  of  $1,000,000;  or if any
Borrower or any Guarantor  fails to perform or observe any other term,  covenant
or agreement  contained in any agreement,  document or instrument  evidencing or
securing any such Indebtedness,  or under which any such Indebtedness was issued
or created, beyond any period of grace, if any, provided with respect thereto if
the effect of such failure is either (i) to cause, or permit the holders of such
Indebtedness  (or a trustee on behalf of such holders) to cause,  any payment in
respect  of such  Indebtedness  to  become  due prior to its due date or (ii) to
permit the holders of such  Indebtedness (or a trustee on behalf of such holder)
to elect a majority of the board of directors of any Borrower or any  Guarantor;
or

               (e) A judgment or order for the payment of money,  which together
with other such judgments or orders exceeds the aggregate  amount of $1,000,000,
shall  be  rendered  against  any  Borrower  or any  Guarantor  and  either  (i)
enforcement  proceedings  shall have been  commenced by any  creditor  upon such
judgment or order and such judgment or order shall have remained unsatisfied and
such  proceedings  shall have remained  unstayed for a period of 30  consecutive
days, or (ii) for a period of 30 consecutive  days, such judgment or order shall
have  remained  unsatisfied  and a stay of  enforcement  thereof,  by  reason of
pending appeal or otherwise, shall not have been in effect; or

               (f) The  occurrence or existence  with respect to any Borrower or
any Guarantor or any of their ERISA Affiliates of any of the following:  (i) any
"prohibited  transaction" (as defined in Section 406 of ERISA or Section 4975 of
the Code) involving any Plan, (ii) any Reportable event shall occur with respect
to any Plan, (iii) the filing under ERISA of a notice of intent to terminate any
Plan or the termination of any Plan, (iv) any event or circumstance exists which
might constitute grounds entitling the PBGC to institute proceedings under ERISA
for the termination of, or the appointment of a trustee to administer, any Plan,
or the  institution  of the PBGC of any such  proceedings,  or (v)  complete  or
partial   withdrawal   under   ERISA   from  any   Multiemployer   Plan  or  the
reorganization,  insolvency,  or termination of any  Multiemployer  Plan, and in
each of the foregoing cases, such event or condition, together with


CREDIT AGREEMENT                                                        Page 44





all other  events  or  conditions,  if any,  could in the  opinion  of the Banks
subject any Borrower or any Guarantor to any tax, penalty, or other liability to
a Plan, the PBGC, or otherwise (or any combination thereof); or

               (g) Any Borrower or any  Guarantor  shall  generally  not pay its
debts as they become due,  or shall  admit in writing its  inability  to pay its
debts  generally,  or  shall  make a  general  assignment  for  the  benefit  of
creditors, or shall institute, or there shall be instituted against any Borrower
or any Guarantor,  any proceeding or case seeking to adjudicate it a bankrupt or
insolvent  or seeking  liquidation,  winding  up,  reorganization,  arrangement,
adjustment,  protection,  relief or composition of it or its debts under any law
relating to bankruptcy,  insolvency or reorganization or relief or protection of
debtors or  seeking  the entry of an order for  relief or the  appointment  of a
receiver,  trustee,  custodian  or  other  similar  official  for it or for  any
substantial part of its property,  and, if such proceeding is instituted against
any Borrower or any  Guarantor  and is being  contested by such Borrower or such
Guarantor,  as the case may be, in good faith by appropriate  proceedings,  such
proceedings shall remain undismissed or unstayed for a period of 30 days; or the
any  Borrower or any  Guarantor  shall take any action  (corporate  or other) to
authorize or further any of the actions described above in this subsection; or

               (h) Any event of default described in any Security Document shall
have  occurred  and be  continuing,  or any  material  provision of any Security
Document  shall at any time for any  reason  cease to be valid and  binding  and
enforceable against any obligor thereunder,  or the validity,  binding effect or
enforceability  thereof shall be contested by any person, or any obligor,  shall
deny that it has any or  further  liability  or  obligation  thereunder,  or any
Security Document shall be terminated,  invalidated or set aside, or be declared
ineffective  or  inoperative  or in any way cease to give or provide to the Bank
the benefits purported to be created thereby; or

               (i) (A) COG or COE shall fail to be a wholly-owned  Subsidiary of
CRI, (B) COGL shall fail to be a  wholly-owned  subsidiary  of COG or, after the
acquisition is completed pursuant to the Purchase  Documents,  Black Stone shall
fail to be a  wholly-owned  subsidiary  of COG, or (C) the Board of Directors of
CRI shall not consist of a majority of the Continuing Directors of CRI; or

               (j) Any Change in Control shall occur.


          8.2 Remedies.

               (a) Upon the occurrence  and during the  continuance of any Event
of Default,  the Agent may,  and upon being  directed  to do so by the  Majority
Banks,  shall,  by notice to the Borrowers  terminate the Commitments or declare
the outstanding  principal of, and accrued  interest on, the Notes and all other
amounts due under this Agreement and all other


CREDIT AGREEMENT                                                        Page 45





Loan Documents,  to be immediately due and payable, or demand immediate delivery
of cash collateral, and the Borrowers agree to deliver such cash collateral upon
such demand,  in an amount equal to the maximum  amount that may be available to
be drawn at any time prior to the stated  expiry of all  outstanding  Letters of
Credit, or all of the above, whereupon the Commitments shall terminate forthwith
and all such amounts shall become  immediately due and payable,  or both, as the
case may be,  provided  that in the case of any event or condition  described in
Section 8.1(g), the Commitments shall automatically  terminate forthwith and all
such amounts shall  automatically  become  immediately  due and payable  without
notice; in each case without demand, presentment,  protest, diligence, notice of
dishonor or other formality, all of which are hereby expressly waived.

               (b) Upon the occurrence and during the  continuance of such Event
of Default,  the Agent may,  and upon being  directed  to do so by the  Majority
Banks,  shall, in addition to the remedies  provided in Section 8.2(a),  enforce
its  rights  either  by  suit in  equity,  or by  action  at  law,  or by  other
appropriate  proceedings,  whether for the specific  performance  (to the extent
permitted by law) of any covenant or agreement contained in this Agreement or in
any then outstanding Note or any Security  Document or in aid of the exercise of
any power granted in this Agreement,  any then outstanding Notes or any Security
Document,  and may enforce the payment of any then outstanding  Notes and any of
the other rights of the Agent and the Banks in any other  agreement or available
at law or in equity.

               (c) Upon the occurrence  and during the  continuance of any Event
of Default  hereunder,  each Bank may at any time and from time to time, without
notice to the Borrowers (any  requirement for such notice being expressly waived
by the  Borrowers and  Guarantors)  set off and apply against any and all of the
obligations  of any Borrower or any  Guarantor now or hereafter  existing  under
this Agreement, any of the Notes or the Security Documents, any and all deposits
(general or special, time or demand,  provisional or final) at any time held and
other  indebtedness  at any time  owing by such Bank to or for the credit or the
account of any Borrower or any Guarantor and any property of any Borrower or any
Guarantor from time to time in possession of such Bank,  irrespective of whether
or not any  Bank  shall  have  made  any  demand  hereunder  and  although  such
obligations may be contingent and unmatured.  The rights of the Banks under this
Section 8.2(c) are in addition to other rights and remedies (including,  without
limitation, other rights of setoff) which the Banks may have.

          8.3  Distribution of Proceeds.  All proceeds of any realization on the
Collateral  received by the Agent  pursuant  to the  Security  Documents  or any
payments on any of the liabilities secured by the Security Documents received by
the Agent or any Bank upon and  during the  continuance  of any Event of Default
shall be allocated and distributed as follows:

               (a) First,  to the payment of all costs and  expenses,  including
without  limitation  all  attorneys'  fees, of the Agent in connection  with the
enforcement  of  the  Security   Documents  and  otherwise   administering  this
Agreement;



CREDIT AGREEMENT                                                         Page 46





               (b)  Second,  to the  payment  of all costs,  expenses  and fees,
including without limitation,  commitment fees and attorneys' fees, owing to the
Banks pursuant to the Bank  Obligations  on a pro rata basis in accordance  with
the Bank  Obligations  consisting of fees, costs and expenses owing to the Banks
under the Bank Obligations for application to payment of such liabilities;

               (c) Third,  to the Banks on a pro rata basis in  accordance  with
the Bank  Obligations  consisting of interest and principal  (including  without
limitation any cash collateral for any  outstanding  Letters of Credit) owing to
the Banks under the Bank  Obligations and to any Bank owing pursuant to any Swap
Agreement to which it is a party (whether  pursuant to a termination  thereof or
otherwise), for application to payment of such liabilities;

               (d) Fourth,  to the payment of any and all other amounts owing to
the  Banks on a pro rata  basis in  accordance  with the  total  amount  of such
Indebtedness  owing to each of the  Banks,  for  application  to payment of such
liabilities; and

               (e)  Fifth,  to the  Borrowers  or such  other  person  as may be
legally entitled thereto.

          8.4 Letter of Credit  Liabilities.  For the  purposes of payments  and
distributions  under Section 8.3, the full amount of Bank Obligations on account
of any Letter of Credit then  outstanding  but not drawn upon shall be deemed to
be then due and  owing.  Amounts  distributable  to the Banks on account of such
Bank  Obligations  under such Letter of Credit  shall be deposited in a separate
interest bearing  collateral account in the name of and under the control of the
Agent and held by the Agent  first as  security  for such  Letter of Credit Bank
Obligations  and then as security for all other Bank  Obligations and the amount
so deposited  shall be applied to the Letter of Credit Bank  Obligations at such
times and to the  extent  that such  Letter of Credit  Bank  Obligations  become
absolute  liabilities  and if and to the extent  that the Letter of Credit  Bank
Obligations fail to become absolute Bank  Obligations  because of the expiration
or termination of the underlying Letters of Credit without being drawn upon then
such amounts shall be applied to the  remaining  Bank  Obligations  in the order
provided in Section  8.3.  Each  Borrower  hereby  grants to the Agent,  for the
benefit of the Banks, a lien and security  interest in all such funds  deposited
in such separate interest bearing  collateral  account,  as security for all the
Bank Obligations as set forth above.



CREDIT AGREEMENT                                                        Page 47





          SECTION 9. The Agent, the Co-Agent and the Banks.

          9.1 Appointment;  Nature of  Relationship.  The First National Bank of
Chicago is hereby appointed by the Lenders as the Agent hereunder and under each
other Loan Document, and each of the Lenders irrevocably authorizes the Agent to
act as the contractual  representative of such Lender with the rights and duties
expressly set forth herein and in the other Loan Documents.  The Agent agrees to
act as such contractual  representative upon the express conditions contained in
this  Section 9.  Notwithstanding  the use of the  defined  term  "Agent," it is
expressly understood and agreed that the Agent shall have not have any fiduciary
responsibilities  to any  Lender by reason of this  Agreement  or any other Loan
Document  and that the  Agent is  merely  acting  as the  representative  of the
Lenders with only those duties as are expressly set forth in this  Agreement and
the  other  Loan  Documents.   In  its  capacity  as  the  Lenders'  contractual
representative, the Agent (i) does not hereby assume any fiduciary duties to any
of the Lenders,  (ii) is a "representative" of the Lenders within the meaning of
Section  9- 105 of the  Uniform  Commercial  Code  and  (iii)  is  acting  as an
independent  contractor,  the rights  and  duties of which are  limited to those
expressly set forth in this Agreement and the other Loan Documents.  Each of the
Lenders  hereby agrees to assert no claim against the Agent on any agency theory
or any other theory of  liability  for breach of  fiduciary  duty,  all of which
claims each Lender hereby waives.

          9.2 Powers.  The Agent shall have and may  exercise  such powers under
the Loan  Documents as are  specifically  delegated to the Agent by the terms of
each thereof,  together with such powers as are reasonably  incidental  thereto.
The Agent shall have no implied duties to the Lenders,  or any obligation to the
Lenders to take any action thereunder except any action specifically provided by
the Loan Documents to be taken by the Agent.

          9.3  General  Immunity.  Neither  the Agent nor any of its  directors,
officers,  agents or employees  shall be liable to the Borrowers,  any Borrower,
the  Lenders or any Lender for any action  taken or omitted to be taken by it or
them  hereunder or under any other Loan  Document or in  connection  herewith or
therewith except for its or their own gross negligence or willful misconduct.

          9.4 No Responsibility for Loans, Recitals,  etc. Neither the Agent nor
any of its directors,  officers, agents or employees shall be responsible for or
have any duty to ascertain, inquire into, or verify (i) any statement,  warranty
or  representation  made in  connection  with any Loan Document or any borrowing
hereunder;  (ii)  the  performance  or  observance  of any of the  covenants  or
agreements  of  any  obligor  under  any  Loan  Document,   including,   without
limitation,  any agreement by an obligor to furnish information directly to each
Lender;  (iii) the  satisfaction  of any  condition  specified in Section 3.2 or
otherwise   hereunder;   (iv)  the  validity,   enforceability,   effectiveness,
sufficiency  or  genuineness  of any Loan  Document or any other  instrument  or
writing  furnished  in  connection  therewith;  or (v) the  value,  sufficiency,
creation, perfection or priority of any interest in any collateral security. The
Agent  shall have no duty to disclose  to the  Lenders  information  that is not
required to be furnished by the Borrowers to the Agent at


CREDIT AGREEMENT                                                        Page 48





such time, but is voluntarily furnished by the Borrowers to the Agent (either in
its capacity as Agent or in its individual capacity).

          9.5 Action on Instructions of Lenders. The Agent shall in all cases be
fully protected in acting, or in refraining from acting, hereunder and under any
other Loan  Document  in  accordance  with  written  instructions  signed by the
Majority  Lenders,  and such instructions and any action taken or failure to act
pursuant  thereto  shall be binding on all of the  Lenders and on all holders of
Notes.  The Lenders hereby  acknowledge that the Agent shall be under no duty to
take any  discretionary  action  permitted  to be taken  by it  pursuant  to the
provisions  of this  Agreement  or any other  Loan  Document  unless it shall be
requested in writing to do so by the Majority Lenders.  The Agent shall be fully
justified  in failing or  refusing  to take any action  hereunder  and under any
other Loan Document unless it shall first be indemnified to its  satisfaction by
the Lenders pro rata against any and all liability, cost and expense that it may
incur by reason of taking or continuing to take any such action.

          9.6 Employment of Agents and Counsel. The Agent may execute any of its
duties  as Agent  hereunder  and under any other  Loan  Document  by or  through
employees,  agents,  and  attorneys-in-fact  and shall not be  answerable to the
Lenders,  except  as to money or  securities  received  by it or its  authorized
agents,  for the default or misconduct  of any such agents or  attorneys-in-fact
selected by it with  reasonable  care.  The Agent shall be entitled to advice of
counsel  concerning all matters  pertaining to the agency hereby created and its
duties hereunder and under any other Loan Document.

          9.7  Reliance on  Documents;  Counsel.  The Agent shall be entitled to
rely upon any Note, notice, consent,  certificate,  affidavit, letter, telegram,
statement,  paper or  document  believed  by it to be genuine and correct and to
have been  signed or sent by the proper  person or  persons,  and, in respect to
legal matters,  upon the opinion of counsel selected by the Agent, which counsel
may be employees of the Agent.

          9.8 Agent's  Reimbursement and  Indemnification.  The Lenders agree to
reimburse and  indemnify  the Agent  ratably in  proportion to their  respective
Commitments (or, if the Commitments have been terminated, in proportion to their
Commitments  immediately  prior to such  termination)  (i) for any  amounts  not
reimbursed by the Borrowers for which the Agent is entitled to  reimbursement by
the Borrowers under the Loan Documents,  (ii) for any other expenses incurred by
the  Agent on  behalf  of the  Lenders,  in  connection  with  the  preparation,
execution,  delivery,  administration  and enforcement of the Loan Documents and
(iii) for any liabilities,  obligations,  losses, damages,  penalties,  actions,
judgments,  suits,  costs,  expenses  or  disbursements  of any kind and  nature
whatsoever which may be imposed on, incurred by or asserted against the Agent in
any way relating to or arising out of the Loan  Documents or any other  document
delivered in connection therewith or the transactions  contemplated  thereby, or
the  enforcement  of any of the terms  thereof or of any such  other  documents,
provided  that no Lender shall be liable for any of the  foregoing to the extent
they arise from the gross negligence


CREDIT AGREEMENT                                                        Page 49





or willful  misconduct of the Agent.  The  obligations of the Lenders under this
Section 9.8 shall survive  payment of the Bank  Obligations  and  termination of
this Agreement.

          9.9 Notice of Default. The Agent shall not be deemed to have knowledge
or notice of the occurrence of any Default or Event of Default  hereunder unless
the Agent has received  written notice from a Lender or a Borrower  referring to
this Agreement describing such Default or Event of Default and stating that such
notice is a "notice of  default".  In the event that the Agent  receives  such a
notice, the Agent shall give prompt notice thereof to the Lenders.

          9.10 Rights as a Lender. In the event the Agent is a Lender, the Agent
shall  have the same  rights  and  powers  hereunder  and under  any other  Loan
Document  as any  Lender  and may  exercise  the same as  though it were not the
Agent, and the term "Lender" or "Lenders" shall, at any time when the Agent is a
Lender,  unless  the  context  otherwise  indicates,  include  the  Agent in its
individual  capacity.  The Agent may accept  deposits  from,  lend money to, and
generally engage in any kind of trust,  debt,  equity or other  transaction,  in
addition to those  contemplated  by this  Agreement or any other Loan  Document,
with any Borrower or any of their respective  Subsidiaries in which any Borrower
or such Subsidiary is not restricted hereby from engaging with any other Person.
The Agent, in its individual capacity, is not obligated to remain a Lender.

          9.11 Lender Credit  Decision.  Each Lender  acknowledges  that it has,
independently  and without reliance upon the Agent or any other Lender and based
on the financial  statements  prepared by the Borrowers and such other documents
and information as it has deemed  appropriate,  made its own credit analysis and
decision to enter into this Agreement and the other Loan Documents.  Each Lender
also  acknowledges  that it will,  independently  and without  reliance upon the
Agent or any other  Lender and based on such  documents  and  information  as it
shall deem appropriate at the time, continue to make its own credit decisions in
taking or not taking action under this Agreement and the other Loan Documents.

          9.12  Successor  Agent.  The  Agent  may  resign at any time by giving
written notice thereof to the Lenders and the Borrowers,  such resignation to be
effective upon the  appointment of a successor  Agent or, if no successor  Agent
has been appointed, forty-five days after the retiring Agent gives notice of its
intention to resign. Upon any such resignation,  the Majority Lenders shall have
the right to appoint,  on behalf of the Borrowers  and the Lenders,  a successor
Agent.  If no  successor  Agent  shall have been so  appointed  by the  Majority
Lenders  within  thirty days after the  resigning  Agent's  giving notice of its
intention to resign,  then the  resigning  Agent may  appoint,  on behalf of the
Borrowers,  and the Lenders, a successor Agent. If the Agent has resigned and no
successor  Agent has been  appointed,  the Lenders may perform all the duties of
the Agent  hereunder and the Borrowers shall make all payments in respect of the
Bank Obligations to the applicable  Lender and for all other purposes shall deal
directly  with the Lenders.  No successor  Agent shall be deemed to be appointed
hereunder  until such  successor  Agent has accepted the  appointment.  Any such
successor Agent shall be a commercial bank having capital and retained  earnings
of at least $50,000,000. Upon the acceptance of any


CREDIT AGREEMENT                                                        Page 50





appointment as Agent hereunder by a successor Agent,  such successor Agent shall
thereupon succeed to and become vested with all the rights,  powers,  privileges
and duties of the resigning Agent.  Upon the effectiveness of the resignation of
the  Agent,  the  resigning  Agent  shall  be  discharged  from its  duties  and
obligations  hereunder and under the Loan Documents.  After the effectiveness of
the resignation of an Agent,  the provisions of this Section 9 shall continue in
effect for the benefit of such Agent in respect of any actions  taken or omitted
to be taken by it while it was acting as the Agent hereunder and under the other
Loan Documents.

          9.13 Pro Rata Sharing by Banks. Each Bank agrees with every other Bank
that,  in the event that it shall  receive  and retain any payment on account of
the  Borrowers's  obligations  under this  Agreement,  the Notes or the Security
Documents in a greater  proportion than that received by any other Bank, whether
such payment be voluntary, involuntary or by operation of law, by application of
set-off of any indebtedness or otherwise, then such Bank shall promptly purchase
a participation interest from the other Banks, without recourse, for cash and at
face value,  ratably in  accordance  with its Pro Rata Share,  in such an amount
that each Bank shall have  received  payment in respect of such  obligations  in
accordance with its Pro Rata Share; provided,  that if any such purchase be made
by any Bank and if any such excess payment  relating thereto or any part thereof
is thereafter  recovered from such Bank,  appropriate  adjustment in the related
purchase from the other Banks shall be made by rescission and restoration of the
purchase  price as to the portion of such  excess  payment so  recovered.  It is
further  agreed that,  to the extent there is then owing by the Borrowers to any
Bank indebtedness other than that evidenced by this Agreement, the Notes and the
Security  Documents  to which such Bank may apply any  involuntary  payments  of
indebtedness by the Borrowers, including those resulting from exercise of rights
of  set-off  or  similar  rights,  such Bank  shall  apply all such  involuntary
payments first to obligations of the Borrowers to the Banks  hereunder and under
the Notes and the Security Documents and then to such other indebtedness owed to
it by the Borrowers. In addition, it is further agreed that any and all proceeds
resulting  from a sale or  other  disposition  of any  collateral  which  may be
hereafter  granted for the benefit of the Banks to secure the obligations of the
Borrowers  hereunder,  shall be applied first to obligations of the Borrowers to
the Banks  hereunder  and under the Notes and the Security  Documents,  and then
ratably to any other  indebtedness  owed by the  Borrowers to the Banks which is
secured by such collateral.

          9.14 Determination of Borrowing Base, Etc. Any  redetermination of the
Borrowing  Base shall be made  mutually by the Agent and the Co-Agent  (provided
that  if  the  Agent  and  the   Co-Agent   cannot  so  mutually   agree,   such
redetermination  of  Borrowing  Base shall be the lower of such  redetermination
made by the Agent or the Co-Agent  individually) and submitted to the Banks. The
redetermined  Borrowing  Base  shall  then be  effective  when  approved  by the
Majority  Banks.  The Borrowing  Base may be  re-evaluated  from time to time as
determined by the Majority Banks,  and will be re-evaluated  upon the request of
the Borrowers  (provided that the Borrowers cannot request any  re-evaluation of
the  Borrowing  Base more than four times in any twelve month  period),  and, in
addition, on or within 20 days prior to the date any Subordinated Debt is issued
or otherwise incurred and at least twice annually as follows:


CREDIT AGREEMENT                                                         Page 51





promptly  upon  receipt  of the annual  reserve  report  referred  to in Section
7.1(d)(ix)  hereof and each six  months  thereafter.  Except  for the  scheduled
re-evaluations  of the Borrowing Base,  each Bank requesting a re-evaluation  of
the Borrowing Base agrees to give notice to the Borrowers of such request.

          9.15 Co-Agent.  Bank One, Texas,  N.A., as Co-Agent  hereunder,  shall
have no duties or liabilities.


          SECTION 10. Miscellaneous.

          10.1  Amendments;  Etc. (a) This  Agreement  and any term or provision
hereof may be amended, waived or terminated by an instrument in writing executed
by the  Borrowers  and  the  Majority  Banks,  provided,  that,  notwithstanding
anything in this  Agreement to the contrary,  except by an instrument in writing
executed by the Borrowers  and all of the Banks,  no such  amendment,  waiver or
termination  shall  authorize  or permit the  extension  of the time or times of
payment of the  principal  of, or  interest  on, the Notes or the  reduction  in
principal  amount thereof or the rate of interest  thereon,  or any fees payable
hereunder,  or increase the  respective  Commitments of any Bank, or release any
Guaranty or Borrower,  or release any material amount of the Collateral from the
Liens granted pursuant hereto, or amend this Section 10.1.

               (a) Any such amendment,  waiver or termination shall be effective
only in the specific instance and for the specific purpose for which given.

               (c)  Notwithstanding  anything  herein to the contrary,  any Bank
that has failed to fund any  Advance or other  amount  required  to be funded by
such Bank  hereunder  shall not be  entitled  to vote  (whether to consent or to
withhold its consent) with respect to any amendment,  modification,  termination
or waiver of any provision of any Loan Document or a departure  therefrom or any
direction  from the Banks to the Agent and,  for  purposes  of  determining  the
Majority Banks, the Commitments and Advances of such Bank shall be disregarded.

          10.2  Notices.  (a) Except as  otherwise  provided in Section  10.2(c)
hereof, all notices, requests, consents and other communications hereunder shall
be in writing and shall be delivered or sent to the Borrowers, the Banks and the
Agent at the respective  addresses for notices set forth on the signature  pages
hereof,  or to such other  address as may be designated  by the  Borrowers,  the
Agent or any Bank by notice to the other  parties  hereto.  All notices shall be
deemed  to have  been  given  at the time of  actual  delivery  thereof  to such
address,  or if sent by the Agent or any Bank to the  Borrowers  by certified or
registered mail,  postage prepaid,  to such address,  on the fifth day after the
date of mailing.



CREDIT AGREEMENT                                                        Page 52





               (b)  Notices  by the  Borrowers  to the  Agent  with  respect  to
requests for Advances pursuant to Section 3.1 and notices of prepayment pursuant
to Section 4.1(c) shall be irrevocable and binding on the Borrowers.

               (c) Any notice to be given by the Borrowers to the Agent pursuant
to Section  4.1(c) or Section 3.1 and any notice to be given by the Agent or any
Bank hereunder, may be given by telephone, by telex or by facsimile transmission
and must be immediately  confirmed in writing in the manner  provided in Section
10.2(a).  Any such notice given by  telephone,  telex or facsimile  transmission
shall be deemed  effective upon receipt thereof by the party to whom such notice
is given.

          10.3 Conduct No Waiver;  Remedies Cumulative.  No course of dealing on
the part of the Agent or the Banks,  nor any delay or failure on the part of the
Agent or any Bank in exercising any right,  power or privilege  hereunder  shall
operate as a waiver of such right, power or privilege or otherwise prejudice the
Agent's or the Banks'  rights and  remedies  hereunder;  nor shall any single or
partial  exercise  thereof preclude any further exercise thereof or the exercise
of any other right,  power or privilege.  No right or remedy  conferred  upon or
reserved  to the Agent or the Banks  under  this  Agreement  is  intended  to be
exclusive  of any other  right or remedy,  and every  right and remedy  shall be
cumulative and in addition to every other right or remedy given hereunder or now
or hereafter  existing under any applicable law. Every right and remedy given by
this  Agreement or by applicable  law to the Agent or the Banks may be exercised
from time to time and as often as may be deemed expedient by them.

          10.4  Reliance  on and  Survival  of  Various  Provisions.  All terms,
covenants,  agreements,  representations  and  warranties of the Borrowers  made
herein or in any certificate or other document  delivered  pursuant hereto shall
be  deemed  to  be  material  and  to  have  been  relied  upon  by  the  Banks,
notwithstanding any investigation heretofore or hereafter made by any Bank or on
any Bank's behalf, and those covenants and agreements of the Borrowers set forth
in Section 10.5 hereof shall  survive the  repayment in full of the Advances and
other  obligations of the Borrowers  hereunder and under Security  Documents and
the  termination of the  Commitments.  10.5 Expenses;  Indemnification.  (a) The
Borrowers  agree to pay and save  the  Agent  harmless  from  liability  for the
payment of the  reasonable  fees and  expenses  of any  counsel  the Agent shall
employ,  in  connection  with the  preparation,  execution  and delivery of this
Agreement,  the Notes and the Security  Documents  and the  consummation  of the
transactions contemplated hereby and in connection with any amendments,  waivers
or consents and other matters in connection therewith,  and all reasonable costs
and expenses of the Agent and the Banks (including  reasonable fees and expenses
of counsel) in connection with any  enforcement of this Agreement,  the Notes or
the Security Documents.

               (b) Each of the Borrowers  hereby  indemnifies and agrees to hold
harmless  the Banks and the Agent,  and their  respective  officers,  directors,
employees  and agents,  harmless  from and against any and all claims,  damages,
losses, liabilities, costs or expenses of


CREDIT AGREEMENT                                                        Page 53





any kind or nature  whatsoever  which the Banks or the Agent or any such  person
may  incur  or which  may be  claimed  against  any of them by  reason  of or in
connection with any Letter of Credit,  and neither any Bank nor the Agent or any
of their respective officers, directors,  employees or agents shall be liable or
responsible  for:  (i) the use which may be made of any  Letter of Credit or for
any acts or omissions  of any  beneficiary  in  connection  therewith;  (ii) the
validity, sufficiency or genuineness of documents or of any endorsement thereon,
even  if  such  documents  should  in fact  prove  to be in any or all  respects
invalid,  insufficient,  fraudulent or forged; (iii) payment by the Agent to the
beneficiary  under any Letter of Credit against  presentation of documents which
do not comply with the terms of any Letter of Credit,  including  failure of any
documents to bear any reference or adequate  reference to such Letter of Credit;
(iv) any error,  omission,  interruption or delay in  transmission,  dispatch or
delivery of any message or advice,  however transmitted,  in connection with any
Letter of Credit; or (v) any other event or circumstance  whatsoever  arising in
connection  with any Letter of Credit;  provided,  however,  that the  Borrowers
shall not be  required  to  indemnify  the  Banks  and the Agent and such  other
persons,  and the Banks and the Agent  shall be liable to the  Borrowers  to the
extent,  but only to the extent,  of any direct,  as opposed to consequential or
incidental,  damages  suffered  by any  Borrower  which  were  caused by (A) the
Agent's  wrongful  dishonor of any Letter of Credit after the presentation to it
by the  beneficiary  thereunder of a draft or other demand for payment and other
documentation strictly complying with the terms and conditions of such Letter of
Credit,  or (B) the payment by the Agent to the beneficiary  under any Letter of
Credit against  presentation  of documents which do not comply with the terms of
the Letter of Credit to the extent,  but only to the extent,  that such  payment
constitutes gross negligence or wilful misconduct of the Agent. It is understood
that in making  any  payment  under a Letter of  Credit  the Agent  will rely on
documents  presented to it under such Letter of Credit as to any and all matters
set forth therein without further  investigation and regardless of any notice or
information  to the contrary,  and such reliance and payment  against  documents
presented  under a Letter  of  Credit  substantially  complying  with the  terms
thereof shall not be deemed gross  negligence or wilful  misconduct of the Agent
in connection with such payment.  It is further  acknowledged  and agreed that a
Borrower may have rights against the  beneficiary  or others in connection  with
any Letter of Credit with respect to which the Agent is alleged to be liable and
it shall be a precondition  of the assertion of any liability of the Agent under
this  Section  that such  Borrower  shall first have taken  reasonable  steps to
enforce remedies in respect of the alleged loss against such beneficiary and any
other parties  obligated or liable in connection  with such Letter of Credit and
any related transactions.

               (c) In  consideration  of the  execution  and  delivery  of  this
Agreement  by each Bank and the  extension  of the  Commitments,  the  Borrowers
hereby  indemnify,  exonerate  and hold the  Agent,  each Bank and each of their
respective  officers,  directors,   employees  and  agents  (collectively,   the
"Indemnified  Parties")  free and harmless from and against any and all actions,
causes of action,  suits, losses,  costs,  liabilities and damages, and expenses
incurred in connection  therewith  (irrespective of whether any such Indemnified
Party is a party to the action for which  indemnification  hereunder is sought),
including reasonable


CREDIT AGREEMENT                                                        Page 54





attorneys' fees and disbursements (collectively, the "Indemnified Liabilities"),
incurred  by the  Indemnified  Parties or any of them as a result of, or arising
out of, or relating to:

                    (i) any  transaction  financed or to be financed in whole or
in part, directly or indirectly, with the proceeds of any Advance;

                    (ii) the entering into and performance of this Agreement and
any other agreement or instrument  executed in connection herewith by any of the
Indemnified  Parties  (including  any  action  brought  by or on  behalf  of the
Borrowers as the result of any  determination  by the Majority Banks not to fund
any Advance in compliance with this Agreement);

                    (iii) any investigation, litigation or proceeding related to
any  acquisition  or  proposed  acquisition  by the  Borrowers  or any of  their
Subsidiaries of any portion of the stock or assets of any Person, whether or not
the Agent or such Bank is party thereto;

                    (iv) any investigation,  litigation or proceeding related to
any  environmental  cleanup,  audit,  compliance or other matter relating to any
release by the Borrowers or any of their  Subsidiaries of any hazardous material
or any violations of Environmental Laws; or

                    (v)  the  presence  on or  under,  or the  escape,  seepage,
leakage, spillage, discharge,  emission,  discharging or releases from, any real
property  owned or operated by the  Borrowers or any  Subsidiary  thereof of any
Hazardous Material (including any losses, liabilities, damages, injuries, costs,
expenses or claims asserted or arising under any Environmental Law),  regardless
of  whether  caused  by,  or  within  the  control  of,  the  Borrowers  or such
Subsidiary,  except for any such Indemnified Liabilities arising for the account
of a particular Indemnified Party by reason of the activities of the Indemnified
Party on the property of the Borrowers conducted  subsequent to a foreclosure on
such  property  by the Banks or by reason of the  relevant  Indemnified  Party's
gross negligence or wilful misconduct or breach of this Agreement, and if and to
the extent that the foregoing  undertaking may be unenforceable  for any reason,
the Borrowers hereby agrees to make the maximum  contribution to the payment and
satisfaction of each of the Indemnified  Liabilities  which is permissible under
applicable  law. The Borrowers  shall be obligated to indemnify the  Indemnified
Parties for all Indemnified Liabilities subject to and pursuant to the foregoing
provisions,  regardless of whether the Borrowers or any of its  Subsidiaries had
knowledge  of the  facts  and  circumstances  giving  rise to  such  Indemnified
Liability.

               10.6 Successors and Assigns.  (a) This Agreement shall be binding
upon and  inure to the  benefit  of the  parties  hereto  and  their  respective
successors and assigns,  provided that the Borrowers may not,  without the prior
consent of the Majority Banks,  assign their rights or obligations  hereunder or
under  the  Notes  and the Banks  shall  not be  obligated  to make any  Advance
hereunder to any entity other than the Borrowers.



CREDIT AGREEMENT                                                         Page 55





                    (b)  Any  Bank  may  sell a  participation  interest  to any
financial  institution  or  institutions,  and  such  financial  institution  or
institutions may further sell, a participation  interest  (undivided or divided)
in, the Advances and such Bank's rights and benefits under this  Agreement,  the
Notes and the Security Documents and to the extent of that  participation,  such
participant or participants  shall have the same rights and benefits against the
Borrowers under Section 6.2(c) as it or they would have had if  participation of
such  participant  or  participants  were the Bank  making the  Advances  to the
Borrowers hereunder,  provided,  however, that (i) such Bank's obligations under
this  Agreement  shall remain  unmodified  and fully  effective and  enforceable
against such Bank,  (ii) such Bank shall remain solely  responsible to the other
parties hereto for the  performance of such  obligations,  (iii) such Bank shall
remain  the  holder of its Note for all  purposes  of this  Agreement,  (iv) the
Borrowers,  the Agent and the other  Banks  shall  continue  to deal  solely and
directly  with such Bank in connection  with such Bank's rights and  obligations
under this  Agreement,  and (v) such Bank shall not grant to its participant any
rights to consent or  withhold  consent to any action  taken by such Bank or the
Agent under this Agreement other than action requiring the consent of all of the
Banks hereunder.  The Agent from time to time in its sole discretion may appoint
agents for the purpose of servicing  and  administering  this  Agreement and the
transactions  contemplated  hereby and  enforcing  or  exercising  any rights or
remedies of the Agent provided under this Agreement, the Notes, or otherwise. In
furtherance  of such  agency,  the Agent may from time to time  direct  that the
Borrowers  provide  notices,  reports and other  documents  contemplated by this
Agreement (or duplicates  thereof) to such agent.  The Borrowers hereby consents
to the appointment of such agent and agrees to provide all such notices, reports
and other  documents  and to otherwise  deal with such agent acting on behalf of
the Agent in the same  manner as would be  required  if  dealing  with the Agent
itself.

                    (c) Each Bank may,  with the prior  consent of the Borrowers
(which consent shall not be unreasonably  withheld) and the Agent, assign to one
or more banks or other  entities all or a portion of its rights and  obligations
under this Agreement  (including,  without  limitation,  all or a portion of its
Commitment,  the  Advances  owing to it and the Note or Notes  and the  Security
Documents held by it); provided, however, that (i) each such assignment shall be
of a uniform, and not a varying, percentage of all rights and obligations,  (ii)
except in the case of an assignment  of all of a Bank's  rights and  obligations
under this  Agreement,  (A) the amount of the  Commitment of the assigning  Bank
being assigned  pursuant to each such  assignment  (determined as of the date of
the Assignment and Acceptance with respect to such assignment) shall in no event
be less than $1,000,000,  and in integral multiples of $500,000  thereafter,  or
such lesser  amount as the  Borrowers and the Agent may consent to and (B) after
giving  effect to each such  assignment,  the  amount of the  Commitment  of the
assigning Bank shall in no event be less than $1,000,000,  and (iii) the parties
to each  such  assignment  shall  execute  and  deliver  to the  Agent,  for its
acceptance  and recording in the Register,  an Assignment  and Acceptance in the
form of Exhibit F hereto (an  "Assignment  and  Acceptance"),  together with any
Note or Notes subject to such assignment and a processing and recordation fee of
$3,500. Upon such execution,  delivery, acceptance and recording, from and after
the effective date specified in such Assignment and Acceptance, (x) the assignee
thereunder shall be a party


CREDIT AGREEMENT                                                        Page 56





hereto  and,  to the extent  that  rights and  obligations  hereunder  have been
assigned to it pursuant to such Assignment and  Acceptance,  have the rights and
obligations of a Bank hereunder and (y) the Bank assignor  thereunder  shall, to
the extent  that  rights and  obligations  hereunder  have been  assigned  by it
pursuant  to such  Assignment  and  Acceptance,  relinquish  its  rights  and be
released  from its  obligations  under this  Agreement  (and,  in the case of an
Assignment and Acceptance  covering all of the remaining portion of an assigning
Bank's rights and obligations under this Agreement,  such Bank shall cease to be
a party hereto).

                    (d)  By  executing  and   delivering   an   Assignment   and
Acceptance,  the Bank assignor thereunder and the assignee thereunder confirm to
and agree with each other and the other  parties  hereto as  follows:  (i) other
than as provided in such Assignment and Acceptance, such assigning Bank makes no
representation  or warranty  and assumes no  responsibility  with respect to any
statements,  warranties or  representations  made in or in connection  with this
Agreement or the execution,  legality,  validity,  enforceability,  genuineness,
sufficiency  or value of this  Agreement  or any other  instrument  or  document
furnished  pursuant hereto;  (ii) such assigning Bank makes no representation or
warranty and assumes no responsibility  with respect to the financial  condition
of the Borrowers or the performance or observance by the Borrowers of any of its
obligations  under this Agreement or any other instrument or document  furnished
pursuant  hereto;  (iii) such  assignee  confirms that it has received a copy of
this Agreement,  together with copies of the financial statements referred to in
Section  6.7  and  such  other  documents  and  information  as  it  has  deemed
appropriate  to make its own credit  analysis  and  decision  to enter into such
Assignment and Acceptance;  (iv) such assignee will,  independently  and without
reliance  under the Agent,  such  assigning  Bank or any other Bank and based on
such  documents  and  information  as it shall  deem  appropriate  at the  time,
continue to make its own credit  decisions in taking or not taking  action under
this Agreement; (v) such assignee appoints and authorizes the Agent to take such
action as agent on its behalf and to exercise such powers and  discretion  under
this Agreement as are delegated to the Agent by the terms hereof,  together with
such powers and discretion as are reasonably  incidental thereto;  and (vi) such
assignee  agrees that it will perform in accordance  with their terms all of the
obligations  that by the terms of this Agreement are required to be performed by
it as a Bank.

                    (e) The Agent shall  maintain at its address  designated  on
the signature pages hereof a copy of each Assignment and Acceptance delivered to
and accepted by it and a register for the recordation of the names and addresses
of the Banks and the Commitment  of, and principal  amount of the Advances owing
to, each Bank from time to time (the  "Register").  The entries in the  Register
shall be conclusive and binding for all purposes, absent manifest error, and the
Borrowers,  the Agent and the Banks may treat each Person whose name is recorded
in the  Register as a Bank  hereunder  for all purposes of this  Agreement.  The
Register  shall be available for  inspection by the Borrowers or any Bank at any
reasonable time and from time to time upon reasonable prior notice.



CREDIT AGREEMENT                                                        Page 57





                    (f)  Upon  its  receipt  of  an  Assignment  and  Acceptance
executed by an assigning  Bank and an assignee,  together with any Note or Notes
subject to such  assignment,  the Agent shall, if such Assignment and Acceptance
has been completed,  (i) accept such Assignment and Acceptance,  (ii) record the
information  contained  therein in the  Register  and (iii) give  prompt  notice
thereof to the  Borrowers.  Within five  Business Days after its receipt of such
notice,  the  Borrowers,  at its own expense,  shall  execute and deliver to the
Agent in exchange for the  surrendered  Note or Notes a new Note to the order of
such  assignee in an amount  equal to the  Commitment  assumed by it pursuant to
such  Assignment  and  Acceptance  and,  if the  assigning  Bank has  retained a
Commitment hereunder, a new Note to the order of the assigning Bank in an amount
equal to the Commitment  retained by it hereunder.  Such new Note or Notes shall
be in an aggregate  principal amount equal to the aggregate  principal amount of
such  surrendered  Note or  Notes,  shall be dated  the  effective  date of such
Assignment and Acceptance and shall  otherwise be in  substantially  the form of
Exhibit F hereto.

                    (g) The Banks may,  in  connection  with any  assignment  or
participation or proposed  assignment or participation  pursuant to this Section
10.6,   disclose  to  the  assignee  or  participant  or  proposed  assignee  or
participant,  any  information  relating  to the  Borrowers  provided  that such
proposed   assignee  or  participant   has  agreed  to  hold  such   information
confidential under the terms described in Section 10.19.

                    (h) Additional lenders may also become Banks hereunder, with
the prior  written  consent of the  Borrowers  and the Agent,  by  executing  an
Assumption  Agreement  substantially  in the form of Exhibit G hereto,  provided
that without the prior  written  consent of the Majority  Banks,  the  aggregate
Commitments of all Banks may not exceed  $200,000,000.  Any Bank, subject to the
prior written  approval of the Majority  Banks,  the Agent and the Borrowers and
subject  to being  paid in full for all  outstanding  liabilities  owing to such
Bank,  may be  terminated  as a Bank  hereunder  and upon such  termination  the
Borrowers  shall have the option to select a bank to  replace  such  terminating
bank and to assume the rights and obligations of such terminated Bank hereunder,
provided that such  replacement  bank is acceptable to the Agent and executes an
Assumption  Agreement  substantially  in the form of Exhibit G hereto.  Upon any
Bank being added hereto or terminated, a new schedule will be distributed by the
Agent to all Banks and the Borrowers showing the Commitment  amount,  the Bridge
Loan amount and the Pro Rata Share of each Bank.

               10.7  CHOICE  OF  LAW.  THE  LOAN  DOCUMENTS  (OTHER  THAN  THOSE
CONTAINING A CONTRARY  EXPRESS  CHOICE OF LAW  PROVISION)  SHALL BE CONSTRUED IN
ACCORDANCE WITH THE INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF THE STATE OF
ILLINOIS, BUT GIVING EFFECT TO FEDERAL LAWS APPLICABLE TO NATIONAL BANKS.

               10.8 Table of Contents  and  Headings.  The table of contents and
the  headings  of the various  subdivisions  hereof are for the  convenience  of
reference only and shall in no way modify any of the terms or provisions hereof.


CREDIT AGREEMENT                                                        Page 58






               10.9  Construction  of  Certain   Provisions.   All  computations
required  hereunder  and  all  financial  terms  used  herein  shall  be made or
construed in accordance with GAAP unless such principles are  inconsistent  with
the express  requirements of this Agreement.  If any provision of this Agreement
refers  to any  action  to be  taken by any  Person,  or which  such  Person  is
prohibited from taking,  such provision shall be applicable  whether such action
is taken  directly  or  indirectly  by such  Person,  whether  or not  expressly
specified in such provision.

               10.10 Integration and Severability.  This Agreement  embodies the
entire  agreement and  understanding  between the  Borrowers and the Banks,  and
supersedes  all prior  agreements  and  understandings,  relating to the subject
matter hereof. In case any one or more of the obligations of the Borrowers under
this Agreement, the Notes or any Security Documents shall be invalid, illegal or
unenforceable in any jurisdiction,  the validity, legality and enforceability of
the remaining  obligations of the Borrowers  shall not in any way be affected or
impaired thereby,  and such invalidity,  illegality or  unenforceability  in one
jurisdiction  shall not affect the validity,  legality or  enforceability of the
obligations  of the Borrowers  under this  Agreement,  the Notes or any Security
Documents in any other jurisdiction.

               10.11 Interest Rate Limitation. Notwithstanding any provisions of
this  Agreement,  the Notes or any  Security  Documents,  in no event  shall the
amount of interest paid or agreed to be paid by the  Borrowers  exceed an amount
computed at the highest rate of interest  permissible  under applicable law. If,
from  any  circumstances  whatsoever,  fulfillment  of  any  provision  of  this
Agreement,  the Notes or any Security  Documents at the time performance of such
provision  shall be due,  shall involve  exceeding the interest rate  limitation
validly  prescribed  by law  which a court of  competent  jurisdiction  may deem
applicable  hereto,  then, ipso facto,  the obligations to be fulfilled shall be
reduced to an amount computed at the highest rate of interest  permissible under
applicable law, and if for any reason whatsoever the Banks shall ever receive as
interest an amount which would be deemed unlawful under such applicable law such
interest  shall be  automatically  applied to the  payment of  principal  of the
Advances  outstanding and other obligations of the Borrowers  hereunder (whether
or not then due and  payable)  and not to the payment of  interest,  or shall be
refunded to the  Borrowers  if such  principal  has been paid in full.  Anything
herein to the contrary  notwithstanding,  the obligations of the Borrowers under
this  Agreement  shall be subject to the  limitation  that  payments of interest
shall not be  required  to the extent  that  receipt of any such  payment by the
Banks would be  contrary  to  provisions  of law  applicable  to the Banks which
limits the maximum  rate of interest  which may be charged or  collected  by the
Banks.

               10.12 Counterparts.  This Agreement may be executed in any number
of  counterparts,  all of which taken together shall constitute one and the same
instrument  and any of the parties  hereto may execute this Agreement by signing
any such counterpart.

               10.13 Independence of Covenants. All covenants hereunder shall be
given  independent  effect so that if a  particular  action or  condition is not
permitted  by any such  covenant,  the fact  that it  would be  permitted  by an
exception to, or would be otherwise within


CREDIT AGREEMENT                                                        Page 59





the limitations of, another  covenant shall not avoid the occurrence of an Event
of Default or any event or  condition  which  with  notice or lapse of time,  or
both,  could  become  such an Event of Default  if such  action is taken or such
condition exists.

               10.14 Consent to  Jurisdiction.  Notwithstanding  the place where
any liability  originates  or arises,  or is to be repaid,  any suit,  action or
proceeding arising out of or relating to this Agreement, any Security Documents,
or the Notes may be  instituted  in any court of competent  jurisdiction  in the
State of Illinois,  the Borrowers and each Guarantor hereby  irrevocably  waives
any objection  which it may have or hereafter has to the laying of such venue of
any such suit,  action or proceeding and any claim that any such suit, action or
proceeding has been brought in an inconvenient forum, and the Borrowers and each
Guarantor hereby irrevocably submits its person and property to the jurisdiction
of any such  court in any such  suit,  action or  proceedings.  Nothing  in this
Section  10.14 shall affect the right of the Bank to bring  proceedings  against
the Borrowers and each  Guarantor or any of their  property in the courts of any
other court of competent jurisdiction.

               10.15 JURY TRIAL WAIVER.  THE AGENT, THE BANKS, EACH BORROWER AND
EACH GUARANTOR,  AFTER  CONSULTING OR HAVING HAD THE OPPORTUNITY TO CONSULT WITH
COUNSEL,  KNOWINGLY,  VOLUNTARILY AND INTENTIONALLY  WAIVE ANY RIGHT ANY OF THEM
MAY HAVE TO A TRIAL BY JURY IN ANY LITIGATION  BASED UPON OR ARISING OUT OF THIS
AGREEMENT,  THE NOTES,  THE SECURITY  DOCUMENTS,  OR ANY RELATED  INSTRUMENT  OR
AGREEMENT OR ANY OF THE TRANSACTIONS  CONTEMPLATED BY THIS AGREEMENT,  THE NOTES
OR THE SECURITY DOCUMENTS OR ANY COURSE OF CONDUCT, DEALING, STATEMENTS (WHETHER
ORAL OR WRITTEN) OR ACTIONS OF ANY OF THEM.  NEITHER THE AGENT,  THE BANKS,  ANY
BORROWER  NOR ANY  GUARANTOR  SHALL  SEEK TO  CONSOLIDATE,  BY  COUNTERCLAIM  OR
OTHERWISE,  ANY SUCH ACTION IN WHICH A JURY TRIAL HAS BEEN WAIVED WITH ANY OTHER
ACTION IN WHICH A JURY TRIAL CANNOT BE OR HAS NOT BEEN WAIVED.  THESE PROVISIONS
SHALL NOT BE DEEMED TO HAVE BEEN  MODIFIED  IN ANY  RESPECT OR  RELINQUISHED  BY
EITHER THE AGENT AND THE BANKS OR THE BORROWERS AND THE  GUARANTORS  EXCEPT BY A
WRITTEN INSTRUMENT EXECUTED BY ALL OF THEM.

               10.16 Joint and Several Obligations; Contribution Rights; Savings
Clause. (a) Notwithstanding  anything to the contrary set forth herein or in any
Note or in any other Loan Document,  the obligations of the Borrowers  hereunder
and under the Notes and the other Loan Documents are joint and several.

                    (b) If any  Borrower  makes a payment in respect of the Bank
Obligations it shall have the rights of contribution set forth below against the
other  Borrowers;  provided that such  Borrower  shall not exercise its right of
contribution until all the Bank Obligations shall have been finally paid in full
in cash. If any Borrower makes a payment in


CREDIT AGREEMENT                                                         Page 60





respect of the Bank  Obligations  that is smaller in  proportion  to its Payment
Share (as  hereinafter  defined) than such payments made by the other  Borrowers
are in  proportion  to the  amounts  of their  respective  Payment  Shares,  the
Borrower making such  proportionately  smaller payment shall,  when permitted by
the preceding  sentence,  pay to the other Borrowers an amount such that the net
payments made by the Borrower in respect of the Bank Obligations shall be shared
among the Borrowers pro rata in proportion to their  respective  Payment Shares.
If any Borrower receives any payment that is greater in proportion to the amount
of its Payment Shares than the payments  received by the other  Borrowers are in
proportion  to the amounts of their  respective  Payment  Shares,  the  Borrower
receiving such  proportionately  greater  payment  shall,  when permitted by the
second  preceding  sentence,  pay to the other Borrowers an amount such that the
payments  received by the Borrowers shall be shared among the Borrowers pro rata
in proportion to their respective  Payment Shares.  Notwithstanding  anything to
the contrary  contained in this paragraph or in this Agreement,  no liability or
obligation of any Borrower that shall accrue pursuant to this paragraph shall be
paid nor shall it be deemed  owed  pursuant to this  paragraph  until all of the
Bank Obligations shall be finally paid in full in cash.

               For purposes  hereof,  the "Payment Share" of each Borrower shall
be the sum of (a) the  aggregate  proceeds of the Bank  Obligations  received by
such  Borrower  plus  (b) the  product  of (i) the  aggregate  Bank  Obligations
remaining  unpaid on the date such Bank  Obligations  become due and  payable in
full, whether by stated maturity, acceleration, or otherwise (the "Determination
Date") reduced by the amount of such Bank Obligations  attributed to all or such
Borrowers pursuant to clause (a) above, times (ii) a fraction,  the numerator of
which is such  Borrower's  net  worth on the  effective  date of this  Agreement
(determined as of the end of the immediately  preceding  fiscal reporting period
of such  Borrower),  and the  denominator of which is the aggregate net worth of
all Borrowers on such effective date.

                    (c) It is the  intent  of each  Borrower,  the Agent and the
Banks that each  Borrower's  maximum  Bank  Obligations  shall be in, but not in
excess of:

                         (i) in a case or  proceeding  commenced  by or  against
such Borrower under the  Bankruptcy  Code on or within one year from the date on
which any of the Bank  Obligations  are incurred,  the maximum amount that would
not  otherwise  cause the Bank  Obligations  (or any other  obligations  of such
Borrower to the Agent and the Banks) to be  avoidable or  unenforceable  against
such  Borrower  under (A)  Section 548 of the  Bankruptcy  Code or (B) any state
fraudulent transfer or fraudulent conveyance act or statute applied in such case
or proceeding by virtue of Section 544 of the Bankruptcy Code; or

                         (ii) in a case or  proceeding  commenced  by or against
such Borrower under the Bankruptcy  Code subsequent to one year from the date on
which any of the Bank  Obligations  are incurred,  the maximum amount that would
not  otherwise  cause the Bank  Obligations  (or any other  obligations  of such
Borrower to the Agent and the Banks) to be  avoidable or  unenforceable  against
such Borrower under any state fraudulent transfer or


CREDIT AGREEMENT                                                         Page 61





fraudulent  conveyance act or statute  applied in any such case or proceeding by
virtue of Section 544 of the Bankruptcy Code;

                         (iii) in a case or  proceeding  commenced by or against
such Borrower  under any law,  statute or regulation  other than the  Bankruptcy
Code  (including,  without  limitation,  any other  bankruptcy,  reorganization,
arrangement,  moratorium,  readjustment  of debt,  dissolution,  liquidation  or
similar debtor relief laws),  the maximum amount that would not otherwise  cause
the Bank Obligations (or any other obligations of such Borrower to the Agent and
the Banks) to be avoidable or  unenforceable  against such  Borrower  under such
law, statute or regulation including,  without limitation,  any state fraudulent
transfer or  fraudulent  conveyance  act or statute  applied in any such case or
proceeding.

                    (d) The  Borrowers  acknowledge  and  agree  that  they have
requested  that the Banks  make  credit  available  to the  Borrowers  with each
Borrower expecting to derive benefit, directly and indirectly, from the Advances
and other credit extended by the Banks to the Borrowers.

               10.17 Consents to Renewals,  Modifications  and Other Actions and
Events.  This Agreement and all of the  obligations  of the Borrowers  hereunder
shall  remain  in full  force  and  effect  without  regard  to and shall not be
released,  affected or impaired  by: (a) any  amendment,  assignment,  transfer,
modification  of or  addition  or  supplement  to  the  Bank  Obligations,  this
Agreement,  any Note or any other Loan Document; (b) any extension,  indulgence,
increase in the Bank  Obligations  or other action or inaction in respect of any
of the Loan Documents or otherwise with respect to the Bank Obligations,  or any
acceptance  of security for, or guaranties  of, any of the Bank  Obligations  or
Loan Documents, or any surrender, release, exchange, impairment or alteration of
any such  security or guaranties  including  without  limitation  the failing to
perfect a security  interest  in any such  security  or  abstaining  from taking
advantage or of realizing upon any  guaranties or upon any security  interest in
any such  security;  (c) any default by any Borrower  under,  or any lack of due
execution,  invalidity  or  unenforceability  of, or any  irregularity  or other
defect in, any of the Loan  Documents;  (d) any waiver by the Banks or any other
person of any required  performance  or otherwise of any condition  precedent or
waiver of any requirement  imposed by any of the Loan Documents,  any guaranties
or  otherwise  with  respect  to the  Bank  Obligations;  (e)  any  exercise  or
non-exercise  of any  right,  remedy,  power or  privilege  in  respect  of this
Agreement or any of the other Loan Documents;  (f) any sale, lease,  transfer or
other  disposition of the assets of any Borrower or any  consolidation or merger
of any Borrower with or into any other person,  corporation,  or entity,  or any
transfer or other  disposition by any Borrower or any other holder of any shares
of capital stock of any Borrower; (g) any bankruptcy, insolvency, reorganization
or similar proceedings  involving or affecting any Borrower;  (h) the release or
discharge of any Borrower from the  performance  or observance of any agreement,
covenant,  term or condition  under any of the Bank  Obligations or contained in
any of the Loan  Documents by  operation of law; or (i) any other cause  whether
similar or dissimilar to the foregoing  which, in the absence of this provision,
would  release,  affect or impair the  obligations,  covenants,  agreements  and
duties of any Borrower hereunder,


CREDIT AGREEMENT                                                        Page 62





including  without  limitation any act or omission by the Agent,  or the Bank or
any other any person which increases the scope of such  Borrower's  risk; and in
each case  described in this  paragraph  whether or not any Borrower  shall have
notice  or  knowledge  of any of the  foregoing,  each of which is  specifically
waived by each Borrower.  Each Borrower warrants to the Agent and the Banks that
it has adequate means to obtain from each other  Borrower on a continuing  basis
information concerning the financial condition and other matters with respect to
the  Borrowers  and that it is not  relying on the Agent or the Banks to provide
such information either now or in the future.

               10.18 Waivers,  Etc. Each Borrower  unconditionally  waives:  (a)
notice of any of the matters referred to in Section 10.17 above; (b) all notices
which may be required  by  statute,  rule or law or  otherwise  to preserve  any
rights of the Agent or the Banks including,  without limitation,  presentment to
and demand of payment or  performance  from the other  Borrowers and protect for
non-payment or dishonor; (c) any right to the exercise by the Agent or the Banks
of any right,  remedy,  power or  privilege in  connection  with any of the Loan
Documents;  (d) any requirement  that the Agent or the Banks in the event of any
default by any  Borrower,  first make  demand  upon or seek to enforce  remedies
against,  such Borrower or any other Borrower before demanding  payment under or
seeking to enforce this Agreement  against any other Borrower;  (f) any right to
notice of the  disposition of any security which the Agent or the Banks may hold
from any  Borrower  or  otherwise  and any  right to  object  to the  commercial
reasonableness  of the disposition of any such security;  and (g) all errors and
omissions in connection with the Agent's or any Bank's  administration of any of
the Bank Obligations, any of the Loan Documents, or any other act or omission of
the Agent or any Bank which changes the scope of the Borrower's risk,  except as
a result of the gross negligence or willful misconduct of the Agent or any Bank.
The  obligations  of each  Borrower  hereunder  shall be  complete  and  binding
forthwith  upon the  execution  of this  Agreement  and subject to no  condition
whatsoever, precedent or otherwise, and notice of acceptance hereof or action in
reliance hereon shall not be required.

               10.19  Confidentiality.  The Banks and the Agent  shall  hold all
confidential information obtained pursuant to the requirements of this Agreement
which has been identified as such by any Borrower or any Guarantor in accordance
with their customary  procedures for handling  confidential  information of this
nature and in accordance with safe and sound banking  practices and in any event
may make disclosure to its examiners,  affiliates, outside auditors, counsel and
other  professional  advisors in connection with this Agreement or as reasonably
required by any bona fide  transferee  or  participant  in  connection  with the
contemplated  transfer  of any Note or  participation  therein or as required or
requested by any governmental  agency or  representative  thereof or pursuant to
legal process.  Without limiting the foregoing,  it is expressly understood that
such confidential  information shall not include  information which, at the time
of disclosure is in the public domain or, which after  disclosure,  becomes part
of the public domain or  information  which is obtained by any Bank or the Agent
had obtained prior to the time of disclosure and identification by any Borrowers
or any Guarantor under this Section, or information  received by any Bank or the
Agent from a third party. Nothing in this


CREDIT AGREEMENT                                                        Page 63




Section or otherwise  shall  prohibit any Bank or the Agent from  disclosing any
confidential  information  to the other Banks or the Agent or render any of them
liable in connection with any such disclosure.

               IN WITNESS WHEREOF, the parties hereto have caused this Agreement
to be duly executed and delivered as of this 1st day of May,  1996,  which shall
be the Effective Date of this Agreement.

Address for Notices:
                                        COMSTOCK RESOURCES, INC.

                                        By: /s/ M. JAY ALLISON
5005 LBJ Freeway, Suite 1000            ----------------------
Dallas, Texas  75244                    M. Jay Allison, its president and chief
Attention: M. Jay Allison                    executive officer
Telephone:  (214) 701-2000
Telecopy:   (214) 701-2111


Address for Notices:
                                        COMSTOCK OIL & GAS, INC.


                                        By: /s/ M. JAY ALLISON
5005 LBJ Freeway, Suite 1000            ----------------------
Dallas, Texas  75244                    M. Jay Allison, its president and chief
Attention: M. Jay Allison                    executive officer
Telephone:  (214) 701-2000
Telecopy:   (214) 701-2111


Address for Notices:
                                        COMSTOCK OIL & GAS - LOUISIANA, INC.

                                        By: /s/ M. JAY ALLISON
                                        ----------------------
5005 LBJ Freeway, Suite 1000
Dallas, Texas  75244                    M. Jay Allison, its president and chief
Attention: M. Jay Allison                    executive officer
Telephone:  (214) 701-2000
Telecopy:   (214) 701-2111



CREDIT AGREEMENT                                                        Page 64





                                        COMSTOCK OFFSHORE ENERGY, INC.

5005 LBJ Freeway, Suite 1000            By: M. Jay Allison
Dallas, Texas  75244                    -----------------------
Attention: M. Jay Allison               M. Jay Allison, its president and chief
Telephone:  (214) 701-2000                   executive officer
Telecopy:   (214) 701-2111


One First National Plaza                THE FIRST NATIONAL BANK OF CHICAGO,
Suite 0362                                    as a Bank and as Agent
Chicago, Illinois  60670
Attention: Andrew Bateman                By: /s/CARL SKOOG
Telephone No: (312) 732-8011             ---------------------
Facsimile No: (312) 732-3055             Its: Second vice president
Commitment Amount:  $85,829,545.46
Bridge Loan Amount: $5,170,454.54
Pro Rata Share: 51.7045%


1717 Main Street                         BANK ONE, TEXAS, NA,
Dallas, Texas 75201                           as a Bank and as Co-Agent
Attention: Mark Cranmer                  By: /s/MARK CRANMER     
Telephone No: (214) 290-2212             ---------------------
Facsimile No: (214) 290-2627
Commitment Amount:  $80,170,454.54
Bridge Loan Amount: $4,829,545.46
Pro Rata Share: 48.2955%





CREDIT AGREEMENT                                                        Page 65




                          CONSENT AND ACKNOWLEDGEMENT

               Each of the  undersigned  Guarantors  is  hereby  executing  this
Agreement for the purpose of agreeing to all of the terms and provisions  hereof
applicable to it, and making the  representaions  and warranties  applicable to
it.

               IN WITNESS WHEREOF,  the undersigned  Guarantors have caused this
Agreement to be duly executed and delivered as of this 1st day of May, 1996.


                                        COMSTOCK MANAGEMENT CORPORATION

                                        By:/s/M. JAY ALLISON
                                        --------------------
                                        M. Jay Allsion, its president and chief
                                             executive officer


                                        COMSTOCK NATURAL GAS, INC.

                                        By:/s/ROLAND O. BURNS
                                        ----------------------
                                        Roland O. Burns, its senior vice-
                                        president and chief financial officer


CREDIT AGREEMENT                                                        Page 66